Sinn 104 I St Sa on Strap

Watch Reviews - see tab below: (52 reviews)
SKU: SI-311

Watch Brand: Sinn

Learn more about Sinn watches

Automatic winding pilot's watch in steel on strap
• Case diameter (mm): 41.0
• Case thickness (mm): 11.5
• Case lug width (mm): 20
• Weight - head only (grams): 73
• Case back: Transparent
• Case finish: Polished
• Case metal: Stainless steel
• Dial color: Black
• Front crystal: Sapphire
• Movement: Automatic mechanical
• Manufacturer's limited warranty: 2 years
• Warranty service: RGM or Sinn
° Earn 2580 WatchPoint Rewards on this purchase
WatchBuys Direct Price: $1,290.00
Availability: In Stock - Ships Immediately

Sinn 104 I St Sa on Strap
Sinn 104 I St Sa on Strap
Product Details

This watch design takes Sinn back to its roots - a simple design without clutter and without gimmicks. Although this watch has design cues from chronograph watches, it is not a chronograph but rather a time, day, date and rotating bezel watch. And to make things even more interesting the date display alternates between German and English!

Despite the aggressive pricing on this watch, Sinn has taken no shortcuts. The base movement is chronometer grade equivalent, sapphire crystals are used on both sides, and the look and finish of the case leave no doubt that it's a Sinn.

This pilot's watch features a highly legible matte black dial, and the watch is water resistant to 200 meters. The ratcheting bezel is of Sinn's design and will not snap off the case if hit due to its screwed bezel construction.

This watch has become a true Sinn classic in a very short amount of time.

  • Case made of stainless steel, polished
  • Captive pilot's bezel with minute ratcheting
  • Sapphire crystal glass on both sides
  • Water resistant to 200 meters
  • English and German day display
  • Low pressure resistant
  • Sinn dark brown vintage calf leather strap

When you purchase your new Sinn watch from WatchBuys, you'll not only get a finely engineered timepiece with excellent value for money, you'll also benefit from the WatchBuys Sinn Advantage.

WatchBuys Advantage #1

Because we are the official and authorized North American Sinn distributor, your name and watch serial number will be automatically registered in our database for a Sinn manufacturer's limited warranty which we pass through.

This means that should your watch require service during the Sinn manufacturer's limited warranty period, service will be provided by Sinn in Germany when you return your watch to them. This Sinn manufacturer's limited warranty is transferable to subsequent owners as allowed by Sinn.

You are responsible for paying the shipping charges to Sinn, and all repairs that Sinn approves under its warranty are at no charge. Sinn will also pay the return shipping charges to the address you specify.

The Sinn manufacturer's limited warranty period is as follows:
  • Watches in the EZM Series: 3 years
  • Watches marked AR containing inert gas: 3 years
  • Watches in the DIAPAL Series: 5 years
  • All other Sinn models: 2 years

WatchBuys Advantage #2

As an added benefit to those who purchase Sinn watches from WatchBuys, you may choose to have your warranty repairs serviced through our US service center, RGM Watch Service located in Mount Joy, Pennsylvania. This added service saves our clients the time and effort of returning their watches to Germany for repair. This benefit is transferable to subsequent owners who purchase directly from the original registered owner.

Please note that you are responsible for paying shipping and insurance charges for sending your watch to RGM. Once they reach your watch in the service queue they will determine which repairs are covered under Sinn's warranty.

It is important to note that oil-filled quartz Sinn watches must be repaired in Germany (EZM 2, Hydro and UX series). If your watch meets one of these conditions and requires service under warranty, please contact us and we'll provide instructions for shipping the watch to Sinn in Germany.

WatchBuys Advantage #3

Your watch will be repaired at no cost to you other than shipping charges to either Sinn or RGM during the warranty period. Sinn watches purchased through the "grey market" (non-authorized sources) may carry no warranty from Sinn. Sinn watches purchased through authorized overseas retailers are governed by the warranty policies of those dealers and/or Sinn, and typically must be sent to either the overseas dealer or Germany for repair.

WatchBuys Advantage #4

You'll be wearing your new Sinn watch soon after your order is placed since we stock Sinn watches and ship free using FedEx Air. Plus, since we are located in the United States, there are no "hidden charges" for shipments to US residents as is the case with most overseas dealers. Such charges can add up to 15% to the cost of your new watch, and include credit card surcharges, foreign exchange credit card bank fees, import duties and taxes, and custom's broker charges.

WatchBuys Advantage #5

WatchBuys offers a comprehensive return policy with no restocking fees to US residents. Overseas dealers, including those involved in the grey market, typically don't offer a return policy, and if they do, returning a watch under the policy is both complicated and expensive due to import/export and custom's requirements. Restocking fees are also common and may range up to 15%.

Learn more about our return policies.

WatchBuys Advantage #6

WatchBuys is pleased to accept payments through PayPal, debit and credit cards. We charge no surcharges to use credit or debit cards, and because we are based in the United States your US card is charged in US dollars with no conversion or exchange rate fees.

We also accept payments from PayPal and charge no surcharges.

Please note that to pay by credit card, debit card or PayPal your account and/or card must be issued by US or Canadian financial institution and billed to a confirmed US or Canadian address.

WatchBuys Advantage #7

When you purchase your new Sinn watch from WatchBuys, you'll earn WatchPoint Rewards which accumulate and may be redeemed against future purchases.

Watch Reviews
Average Watch Ratings: 100% 100% (52 reviews)
Rate this watch:        

The perfect everyday watch

"The perfect everyday watch"

Comments about this watch: I recently purchased a Sinn 104 I St Sa. It arrived very quickly. Upon opening the packaging and box I was immediately impressed by the overall build quality.

This watch is beautiful. The pictures don't do it justice at all. After having worn it for a week, I find it very comfortable on the wrist. The lume is very bright and long lasting. My watch is running + 2 to 3 seconds a day. Certainly within COSC standards. This has become a true favorite.

104 St S I

"104 St S I"

Comments about this watch: As other reviews have noted, WatchBuys service was extremely prompt and professional. I ordered my watch late on a Friday afternoon and it was at my doorstep before lunch the next day. As for the watch itself, I have been pleasantly surprised. It is quite hefty and robust. The polished case really stands out and is quite visible while on the wrist. I never really thought that would be the case when viewing pictures on the internet. The rotating bezel is a pleasure to use. It clicks with a precise authority that I can only describe as...German. I find that I like the syringe shaped hands for legibility. The thick part of the hands are easy to read at a glance and the narrow tips work well for precise readings. I have large wrists and the supplied leather straps, while of good quality, were too short for me to use. The buckle was on the next to last adjustment hole and the tip of the strap was difficult to thread through the keeper hoops. I replaced with NATO strap for the time being... - more details

Great watch & excellent customer service!

"Great watch & excellent customer service!"

Comments about this watch: I bought Sinn 104 I St Sa for my son, and he is very happy. The watch is very beautiful and high quality, and the WatchBuys customer service is awesome,too.

I strongly recommended to anyone to buy watch from WatchBuys.

I am in Love

"I am in Love"

Comments about this watch: I Love the Sinn 104, I have not taken it off my wrist in the past 2 weeks since it has arrived.

I own several Rolex Subs, and other high end and mid tier watches. What I like about this watch is there is nothing else like it. The dial is easy to read, the lume is great and I just love the style.

Dealing with Watchbuys was a breeze I ordered it on a Tuesday afternoon and had it the next morning. If you are on the fence just do it you will not regret it. I ordered it with the strap and black dial with out numerals. I am playing around with different straps. I just received a Bond Nato for Xmas it looks awesome. Its about 5sec a day fast , they claim it will break in.. It is with in spec. Just do it. 5 Stars.. Scott Miami

Highly satisfied with the watch and the store

"Highly satisfied with the watch and the store"

Comments about this watch: I have been eyeing this watch for quite a while to add to my collection. On receiving the watch, I had some concerns about an accessory because I had seen differently elsewhere. Matt from the store was kind enough to call back and alleviate my concern.

This is what sets Watchbuys apart from the other places I have purchased other timepieces and I am highly satisfied about this purchase. I will definitely return to Watchbuys in the future.

Sinn 104 on leather strap

"Sinn 104 on leather strap"

Comments about this watch: As some have said before, the watch, when you open the box and first put it on, is even more lovely than all the pictures of it from any source. Purchase and delivery next day were seamless.

Very happy with the watch and the experience of buying it from WatchBuys.

Sinn 104 I St Sa

"Sinn 104 I St Sa"

Comments about this watch: I've been looking for the best Sinn watch, and I found what I'm looking for! This watch, I believe is a classic and absolute pure class. The design is simple, and yet very elegant and crisp!

Some watch enthusiast, will think that this is a homage but for me it has it's own character and Sinn built its name outstandingly!

Highly recommended! A perfect everyday watch in my opinion. Thanks and best regards!

Uniquely performing watch!

"Uniquely performing watch!"

Comments about this watch: I bought the Sinn 104 and I’m very impressed with it. It’s well suited to compliment the way I think about tasks. The bidirectional countdown bezel provides a constraint-based approach to referencing discrete intervals.

Simply register the desired time span on the bezel to the minute hand and the pip provides the end point. Measuring arbitrary elapsed time is just the inverse: align the pip to current time and subtract the end point from sixty. Simple. I’m a design consultant.

This watch is a tool. It delivers big on intent and quality. The manufacturing is superb.

My experience with WATCHBUYS was pleasant. I like their business model and look forward to my next purchase.

Excellent service!

"Excellent service!"

Comments about this watch: I absolutely love my Sinn 104 I received it on time and as promised. It has performed wonderfully and was packed and shipped perfectly.

In addition I was hesitant to purchase a premium watch online but when in the process I ordered a deployant clasp for the strap I mistakenly ordered the wrong size.

The guys at WatchBuys caught my mistake and immediately notified me and corrected the order. Overall I am very pleased with my purchase and will be dealing with these guys in the future.

My First Sinn and Watchbuys experience

"My First Sinn and Watchbuys experience"

Comments about this watch: I was exposed to this watch via online videos and reviews, along with Watchbuys, so bought it without having seen it in person. When I received the watch it was better than expected! Attractive finish, great bezel, nice lume.

Also pleased with my ordering experience through Watchbuys. Shipping was fast, the time was preset, service was great.

Instantly My Favorite Watch

"Instantly My Favorite Watch"

Comments about this watch: I'll preface this review with stating that this is my first higher end watch. Which is to say that this is the first watch that I've paid over $1k for. So I cannot really compare this watch to others of it's value, but I can give my impressions of the watch. As soon as I removed the watch from the box it was clear that this is the best built watch that I own. The weight and size of the watch is perfect for me, and while the leather band that it comes with is rather thick it is not overly stiff and I found it comfortable even on day one. Over time I imagine it will become even softer. The polish of the watch is perfect as I think it is very attractive without being too flashy. I've also found this to be one of the easiest watches to read in any light because the lume lasts noticeably longer than all other watches I own. I also appreciate that the bezel spins in both directions and feels very solid with no play in it at all. Frankly I don't think there's anything I would change about... - more details

An excellent purchase...Sinn 104

"An excellent purchase...Sinn 104"

Comments about this watch: Great purchase experience. Very informative staff when I called in to discuss the watch. My 104 is keeping excellent time, (-5 over 7 days) I'm very pleased with the quality and how it fits.

Great Customer Service

"Great Customer Service"

Comments about this watch: Absolutely love the watch....first watch arrived on Friday afternoon with day of week not functioning. I called Monday and spoke with Kevin who was immediately sent me a prepaid return label and sent me a new watch with next day delivery.

Tremendous customer service, i highly recommend Great prices and great customer service...Neil

Sinn 104 I St Sa on Strap

"Sinn 104 I St Sa on Strap"

Comments about this watch: This is my first Sinn.

The watch is absolutely flawless, a word that I seldom use its appearance, fit and finish are impeccable. I received inquiries and compliments the very first time worn. Coming from a Rolex Submariner owner, with its keeping chronometer spec time, and at its price-point the Sinn 104 is an incredible value.

My first experience with WatchBuys was absolutely seamless speaking with a knowledgeable representative is exactly the type of customer service I expect ... and received. Well-done WatchBuys!

Next on my list a Sinn 103 chronograph.

Sinn 104, An Awesome Watch

"Sinn 104, An Awesome Watch"

Comments about this watch: I am a mechanical engineer, so small details really matter to me. I am very impressed with the attention to detail of this watch. The case is beautiful, purposeful and elegant at the same time. The polishing is perfect. The dial is very nicely detailed yet not too busy at the same time. I absolutely love the bezel - the inner and outer polished rings, the lumed triangle is sweet - few if any other brands have this design and I especially love the 60 click uni-directional bezel - such a crisp and positive action - perfect. It has taken me a while to get used to the stark white hands. I understand the reasoning behind the design - legibility, but if someone were to ask what I would do differently were it my design this would be the only area. I like the shape and size of the hands, it's just that I would prefer something with just a bit more punch. Perhaps painting the balance end of the seconds hand red. Just a thought. This is a very comfortable watch to wear. I can't see anyone ... - more details

Great Everyday Watch

"Great Everyday Watch"

Comments about this watch: My first time spending over 1K on a watch and I love it! The design is so nice it works in formal settings and as a casual daily beater. The decorated movement is nice, the countdown bezel is cool and the lume is great.

I never exactly measured its accuracy but I haven't had to adjust it in the 2 weeks I have worn it (although I don't mind having all my clocks ahead so I am never late). My only few gripes with the watch are the faint crackling sounds when screwing the crown, the rough winding and the rather low power reserve. Great watch, worth the price.

In love

"In love"

Comments about this watch: I bought this watch after agonizing I've a number of brands and models. I have an Omega Seedmaster Professional already, and was looking for something more robust (waterproof, sapphire crystal) yet good looking for everyday wear. I was a bit nervous about buying the Sinn without being able to try it first, but I have no regrets. It is beautiful in person.

I love the simplicity of the dial (I got the version with indices, not numerals). I love that it goes with nearly any strap, from bright coloured to more muted (I took the OEM strap off right away and starting trying NATOs on, I didn't find anything yet that didn't look good with the dial.) Good for the weekend or work. So much flexibility.

And I didn't have to spend Rolex or Omega dollars to get it. I think I have found my perfect watch.

My Daily Wearer

"My Daily Wearer"

Comments about this watch: The 104, like all Sinn watches is overbuilt. You have a sense of confidence that the watch will hold up to everything your day has to offer. The face is very readable to these 55yr. old eyes in all situations. Included are day/date complications with a hackable second hand and a countdown bezel. The thick leather strap included with the watch is substantial but pliable and supports this watch well.

The 104 is a solid daily wear watch that is up to the task.....and more.

Great watch

"Great watch"

Comments about this watch: Love this watch. Visually striking and has kept great time since I got it.

Watchbuys customer service was super helpful and the watch arrived in two days. Great experience

Some Surprises But Great Watch

"Some Surprises But Great Watch"

Comments about this watch: Watchbuys is great.

An over zealous card company held up the sale and Watchbuys was very helpful. I received the watch in a couple of days. I was surprised that the beautiful, rippled leather strap was so large. I have a medium sized(7.5inches) wrist and am in the next to last hole with the buckle adjustment. Also the description of the dial was black and it is really dark gray under good light. The background for the day/date is significantly darker. Nevertheless, I love the watch.

It is beautiful and easily the nicest watch I have ever owned.

Excellent Watch and Service from Watchbuys

"Excellent Watch and Service from Watchbuys"

Comments about this watch: Received the watch in flawless condition and was pleasantly surprised to find that the watch had been set to the correct date and time for my time zone and was still running!

An impressive feat given that this watch only has a 38 hour power reserve. A+ service from Watchbuys.

Sinn 104

"Sinn 104"

Comments about this watch: Amazing watch and even better customer service. The gentleman who helped me we was awesome and answered all my questions. I am super happy with this purchase and will be buying another Sinn from WATCHBUYS down the line. The Sinn 104 is nothing short of spectacular, the quality and look of the watch are everything if not more of what I expected.

Sinn 104 I St Sa

"Sinn 104 I St Sa"

Comments about this watch: I had only read reviews about the SInn 104 but the positive feedback, the aesthetics of the watch, and the positive reputation of Sinn in the watch community drew me to make a purchase. Watchbuys was very helpful with upfront questions I had as I decided if I wanted the watch on the strap or the bracelet. Then when I ordered the watch the process was pretty quick and I actually liked their check to ensure my purchase wasn't fraudulent. The watch came quickly and when I got it I was very pleased. It is a great looking timepiece. It wears great on my 7.1 wrist. It keeps fantastic time. The first week I had it the watch ran dead even which is right up there with my COSC certified watches. My only gripe is the strap is very long. I have to use the last pinhole to get a fit I enjoy and then I see the tail of the strap when I look down at the watch which I don't like. I'll be ordering an aftermarket strap for it though. So, if you have a small wrist consider trying to order it with the s... - more details

Sinn 104

"Sinn 104"

Comments about this watch: A very good watch

Excellent watch and even better service

"Excellent watch and even better service"

Comments about this watch: I pre-ordered this watch before it was in stock and was told it would be a few days until they came in. That was fine with me as these watches sell out often. I received a call 2 days later to let me know it was in stock and would be mailed that evening. 2 days later I received the watch.

The Sinn 104 is an excellent watch and the service from Watchbuys was extraordinary.

Excellent watch and even better service.

Sinn has a winner

"Sinn has a winner"

Comments about this watch: Firstly, Watchbuys is helpful, and quick to ship. The watch represents good value for the money. Depending on one's taste, it is a handsome, well proportioned piece that is not overstated. It exudes a classic appearance. Moreover, the rich brown strap complements the case and dial of the watch nicely.

It's a style of watch that can easily be made to provide different appearance's with the change of the strap, if desired. Mechanically, it keeps time about the same as my Damasko DK 201 GMT. No complaints there. Nice lume in low light too. If you're considering this piece because it catches your eye, go ahead and ease the throttle forward. You'll be pleased.

Great watch

"Great watch"

Comments about this watch: Amazing build quality and it keeps good time. I'm happy with this purchase.

So far I have experienced great customer service from WatchBuys and I would recommend purchasing from this avenue.

everything they say it is

"everything they say it is"

Comments about this watch: I've been considering the Sinn Brand for a very long time. I finally bit the bullet and purchased one. I was so happy with it I purchased another immediately. I now have the 104 and the 857.

Can't be any happier with my purchase.

Best EDC watch

"Best EDC watch"

Comments about this watch: At first glance it doesn't look like much. Slowly but surely it grew on me. Now it doesn't leave my wrist. In this price range there is no other competition.

Sinn 104

"Sinn 104"

Comments about this watch: Hi just a quick note to say how pleased we were with the purchase of the sinn 104, a very beautiful watch, its quality speaks for itself.

Watch buys we're great to deal with and delivery was very quick. Thanks again Lisa

Sinn 104 St Sa I

"Sinn 104 St Sa I"

Comments about this watch: Love this watch!

Sinn 104

"Sinn 104"

Comments about this watch: The Sinn 104 is a fantastic watch. It looks so much better in person, and it's so comfortable to wear. I currently have it on a black nato, and it's a stunner. The watch is also pretty accurate for the price. There are a lot of ETA fanboys I included, but this movement doesn't make me miss an ETA movement at all.

I love the contrast the black dial and bezel and stainless steel body. It just pops. This probably the best mid-range piece out there for the price. The built quality is superb, and the design is timeless. You will not be disappointed with your purchase.

Sinn 104 I St Sa

"Sinn 104 I St Sa"

Comments about this watch: The Sinn 104 I is an outstanding watch, you can easily tell there has been a great attention to detail given to this watch by its designers and makers. This watch is all about practicality and style coming together. To start with the physical characteristics of the watch, the polishing and case of this watch is very well done with its simplistic straight edges but nothing over the top. The countdown bezel of this watch is unbelievable, it's very handy and with its bidirectional ratchet style, where every turn gives strong satisfying click. The day and date complication flick over instantaneously to the next date, no slow turn over here, which is a feature I really appreciate. And where this watch really comes into its own in my opinion is its dial and movement. The dial of this watch is the perfect ratio not enough going on and too much going on. The micro indices the minute indices disappear into the dial until until they are of importance to you, the syringe style hands add to the ... - more details

Sinn 104

"Sinn 104"

Comments about this watch: Customer service at WatchBuys is outstanding. They called to confirm and answered all my questions. Shipped to my house in two days and I'm on the west coast!

The watch is fantastic, very high standards for the price. If you've been eyeing thie 104, buy it! Don't wait as long as I did because it sold out earlier this year and I had to wait a few months.

Great watch, great service! wouldnt hesitate to purchase from WatchBuys again.

A fantastic everyday watch

"A fantastic everyday watch"

Comments about this watch: I ordered this through Watchbuys after months of thinking about it in the back of my mind. I chose their fastest shipping option and it arrived at my place about 3 days after the order was placed.

Because I was a first time user of the site, I called their customer service line to verify some of my details and the person I spoke to was very helpful. As for the watch itself, it's already my favorite daily wear. The clean matte dial looks beautiful in contrast with the glossy bezel and polished case. It's the perfect size for me, and the lugs aren't too long. It can also be dressed up or down with virtually any strap.

I've been recommending the Sinn 104 to anyone who asks about it, and I'm extremely happy with my purchase.

104 I ST

"104 I ST"

Comments about this watch: Very nice Watch, excellent quality. Good size, not too ostentatious. The strap is a bit too long for my 18cm wrist

Great Experience

"Great Experience"

Comments about this watch: User-friendly website, fast shipping, personal follow-up - WatchBuys is a top notch operation.

I highly recommend them.

Love it!

"Love it!"

Comments about this watch: The watch is a beauty in person. Clean and simple dial, comfortable vintage brown strap, super smooth bezel. Just an overall great piece from Sinn and for a great price too. Great experience with ordering, very professional.

Polished Tool

"Polished Tool"

Comments about this watch: The Sinn 104 is an exquisite combination of tool watch meets dress watch - a balance that sets it apart from the crowd.

The 41 mm dial along with the brown/black leather strap are a feast for the eyes and the fit is precise around the wrist. It's been on my ' get list' for a few years and I'm glad it became available.

If you've been staring at it like I have, buy one. It's a keeper!

The best customer service!

"The best customer service!"

Comments about this watch: Satisfaction with the product I selected may have exceeded my expectations, but getting a personal call regarding shipping and thanking me for choosing watchbuys showed class and made me feel like an important client.

Will do business with them again.

Sinn 104

"Sinn 104"

Comments about this watch: Solid, Accurate, Comfortable

Sinn 104 I St Sa - The Masterpiece

"Sinn 104 I St Sa - The Masterpiece"

Comments about this watch: Originally I was looking for some Swiss watch but I found this Sinn watch and I am very happy that I bought it. I have a small wrist (about 16,5cm) and its 41mm fits perfectly. The dial and hands are in contrast - very easy to read the time. The bezel and the crown are little tough but the watch is brand new so I suppose it gets better. The leather band is very good quality, thick, soft and comfortable however it is little bit long. Even if I use the last hole to adjust the watch on the wrist, it still moves. I made there one more hole and now it fits very well. I also bought metal bracelet and this one is thin and light but very good quality. The watch overall fits very well on the wrist. Day and date is easy to use and lumi is as expected quality. Hour and minute hands are thin so it does not shine as much as for example Seiko but the lumi lasts almost all night and the time is easy to read in the dark. 200 meters WR is another advantage of this watch.  This is perfect watch... - more details

Sinn 104

"Sinn 104"

Comments about this watch: I am a small scale watch collector and never considered a German watch before. Boy I was really missing a lot. This is handsome piece of art.

I feel like a million when I wear it and it is noticed by others very I'm proud to say: "Its German not Swiss and I love It ! " I look forward to adding another Sinn to my collection. A suggestion would be to add a 18k solid yellow gold Two-Tone with a Blue dial. I think that would be a wonderful piece.

Additionally, WATCHBUYS is the place to go real pros very happy with the service I received.

Sinn 104 St Sa on Strap

"Sinn 104 St Sa on Strap"

Comments about this watch: The watch itself is beautifully made - classic German engineering, in all its handmade glory, it has been a purchase so very worth it. 

You can't really see it in the photo but the strap is a rich, dark brown and it looks great - super versatile. 

Also, the delivery experience was just absolutely incredible - I ordered the watch on a Wednesday and as soon as i placed the order, i received a call to confirm the order in the next few hours. They confirmed I had ordered the watch i wanted, confirmed my address and informed me the watch would ship that same day. 

I was then informed that the watch had arrived in Canada on the Thursday and following duties and such, I had the watch in my hands by Friday!

Nice watch

"Nice watch"

Comments about this watch: Great everyday watch. Not too small or too large with a nice clean dial. the lume is also very good. 

The service provided by WatchBuys was also top notch and I'm looking forward to my next purchase.

Exceptional Watch

"Exceptional Watch"

Comments about this watch: Love everything about this watch! Motion is great, has a nice clean look, and works for both formal and informal occasions. The strap is comfortable and adds a bit of a rustic look to the watch. Great value, couldn't be happier!

A countdown bezel at last!

"A countdown bezel at last!"

Comments about this watch: Pros: Perfect size for my 7.5" wrist. I've worn it almost non-stop since receipt and with the leather strap it's so comfortable I forget I'm wearing a watch. Extremely accurate so far, to within a couple of seconds a day. Uncluttered face is very easy to read and lume is very good. AND THE BEZEL: WUNNERFUL, WUNNERFUL to quote a famous German emigre to America. It rachets like a tough hand tool, and to accidentally budge it you'd have to whack it against something hard enough that you'd notice. Soooo nice to have a truly practical timing bezel I wish all manufacturers offered them as options. Cons: there really aren't any because I chose this watch after lots of searching, but the AR and day wheel bear mention. The AR issue may be unavoidable, and the problem is the alteration of the face color. In general lighting situations the face looks sorta "light black," unlike in Sinn's photos. To me it makes the watch look even more toolesqe than I wanted, but I'm probably the only person who n... - more details

Solid, quality watch

"Solid, quality watch"

Comments about this watch: Have had this watch for a couple of weeks now; it is the right size, is comfortable on the wrist, keeps very good time, and the lume lasts well into the night. Sinn has a winner here.

Absolutely loves it

"Absolutely loves it"

Comments about this watch: Bought this as a gift for my father-in-law when he turned 60. He's been wearing it almost every day and he absolutely loves it, this watch is built really well, it looks great on the wrist and the best part of the watch i think is the contrast between the white and the black. 

Also, it's really worth mentioning that as soon as i ordered online, i received within 24 hours a call from WatchBuys explaining the process, describing the watch and the tests they perform, confirming that they'll be shipping it right away, which I promptly received a confirmation of.... bottom-line, great people to buy a watch from, very knowledgable and extremely professional! 

Same experience I had at their roadshow in NY.

Great Every day Watch

"Great Every day Watch"

Comments about this watch: I've been wearing this for about a month now.

It is perfect as an every day wearing watch. Not too large, not too small, robust, solid, and ready to take a beating. I also enjoy the vintage aesthetic and simplicity of the face.

The lume is pretty good too.

Bang for the Buck

"Bang for the Buck"

Comments about this watch: The 104 is a no brainer.

The size is excellent and a very comfortable watch to wear. I don't time watches but after a day of wear it's right on with my iPhone.

I'm not much for the strap but that's personal preference. One thing that I was really pleasantly surprised with is the lume on this watch. It is fantastic! Recommended.

Love this watch!

"Love this watch!"

Comments about this watch: This Sinn 104 is an exercise in simplicity, practicality, and reliability... all in an aesthetically pleasing timepiece. I am a professional photographer who sometimes photographs at nights, using long, manually calculated exposures.

While legibility in the daytime is extremely good, I love the legibility of this timepiece at night! If the lume is well "charged" I can work for hours into the night. Give the way I use this timepiece, an added benefit is that the rotating bezel is of a "count down" design rather than elapsed time (like most dive watches).

While I can work with either, it is far more convenient to know that my exposure is finished when the minute hand reached the "pearl", as opposed to counting minutes from the "pearl" to control my exposure times.

I would have no hesitation in recommending the Sinn 104 St to anyone who needs a simple but well built timepiece, capable of filling many different roles.

Sinn watches feature a number of cutting edge technologies, many of which are unique to Sinn. Please note that not all Sinn watches, including the watch on this page, use all of these Sinn technologies.

Among the more notable Sinn technologies are:

Tegimented Hardened Cases

Many Sinn watches are fitted with Tegimented cases produced in-house by Sinn's case making affiliated company in Glashutte, Germany.

Standard steel used by most watch companies has a hardness of between 200 and 240 HV (Hardness Vickers is a common scale used to measure material hardness). The Tegiment process produces a hardness of at least 1,200 Vickers which is five times harder than standard steel (and on some Sinn models up to nine times harder than standard steel).

The Tegiment process is not a coating consisting of a foreign material; instead the steel itself that has been hardened using a special engineering process that creates a hardened barrier. The base material is a type of stainless steel also used for surgical implants, and the stainless steel resistance to corrosion is further improved by the Tegiment hardening process.

The primary advantages to a Tegimented case are extreme resistance to scratches and other case abrasions, as well as increased resistance to corrosion.

Please note that certain Sinn watches are fully Tegimented (case, bezel) while others are Tegimented only on the bezel. Use the links below to view both categories.

  • View Sinn watches with fully Tegimented cases.

  • View Sinn watches with Tegimented bezels only.

Dehumidification Technology

A number of Sinn models feature cases filled with inert gas. Sinn has found that filling the case with inert gas can help prevent the introduction of moisture and humidity to the case, as well as provide a more stable environment for the oils that lubricate the movement.

The proper care of any mechanical watch movement mandates that these oils maintain both their viscosity and lubrication properties.

  • View Sinn watches with dehumidification technology.

Copper Sulphate Capsules

A number Sinn models use one or more copper sulphate capsules to absorb humidity trapped inside the case. Over time these capsules will gradually turn dark blue indicating that humidity has been absorbed.

The primary benefit to these copper sulphate capsules is a more dry and stable environment for both the movement and the lubricating oils. Together with Sinn's inert gas treatment these capsules form the basis of Sinn's Dry Hold Technology.

This technology not only provides a more stable environment for the movement, but also prevents fogging of the crystal when going from hot to cold environments or from humid to non-humid conditions (such air conditioned buildings).

  • View Sinn watches with copper sulphate capsules.

Extreme Antimagnetic Protection

Magnetism can cause dramatic swings in the timekeeping of a mechanical watch movement. People are often exposed to magnetic fields without even being aware - frequent high altitude flying, metal detectors, audio and video equipment, medical equipment and computer equipment can all cause problems with magnetism.

Many Sinn watches offer extreme protection against magnetism up to 80,000 A/m. Sinn achieves these results using a number of different technologies, including special case and case back construction, soft iron components in the case and protective rings surrounding the movement.

  • View Sinn watches with extreme antimagnetic protection.

DIAPAL Oil Free Escapement

Sinn caused quite a stir when they first released their DIAPAL technology. Beginning in 1995, Sinn began work to create an oil free escapement. With any mechanical watch movement, the aging of oil, especially in the escapement can create long term problems for that movement. Additionally, as movement oil ages, required service intervals become more frequent.

Sinn's early analysis to this problem provided a quick solution (at least in theory) - if you don't use oil, it can't age. The process began by exchanging the ruby escapements for diamonds (the word "DIAPAL" derives from the German name for diamond escapements) in order to achieve the desired effect. The designation stuck, even though today Sinn works with solutions taken from advanced nanotechnology rather than diamonds.

The result is a movement that proves so reliable that Sinn offers an unprecedented five year warranty on their DIAPAL watches.

  • View Sinn watches featuring the DIAPAL oil free escapement.

Hydro Oil Filled Technology

Sinn has developed a technology termed "Hydro" in which the entire watch case is filled with oil. Watches using this technology are based on quartz rather than mechanical movements.

By using this type of movement, Sinn is able to fill the watch with oil, which has the joint affect of greatly enhancing the readability of the dial and time from any angle (including under water), and increasing the water resistance of the watch even at great depths.

  • View Sinn watches with Hydro Oil Filled technology.

Submarine Steel

Sinn has created a line of watches featuring cases made from German submarine steel (the U Series). The steel was procured by Sinn from a steel supplier to Emden GmbH, one of Germany's North Sea shipbuilding yards who construct submarines from the very same steel.

Because of the special steel used from the submarine steelmanufacturer, the case resists the effects of exposure to salt waterand salt water environments.

These cases are produced in-house by Sinn's case making affiliated company in Glashutte, Germany.

This special steel is also amagnetic which means that is does not have magnetic properties and cannot itself become magnetized. The watch movement itself is protected from magnetic fields up to 4,800 A/m.

  • View Sinn watches built from German submarine steel.

EZM Mission Timers

Sinn is a partner for manufacturing watches for the German Special Forces, including SWAT, Customs, FBI, helicopter police, GSG9 and other units.

Beginning with the now highly collectible (and valuable) Sinn EZM 1, Sinn has grown this collection to some of the most durable and highly functional watches made and they remain among the most popular in the collection.

  • View Sinn watches in the EZM Series.

TESTAF Certified Pilot's Watches

Lothar Schmidt, Sinn's CEO and owner had long been disturbed by a lack of technical standards for defining a "pilot's watch". As an engineer, Mr. Schmidt was fluent in standards for diver's watches, anti-magnetic watches and the many other technological standards used to manufacture watches.

A widely used reference for standards is DIN, or the Deutsches Institut fr Normung (German Institute for Standardization). Oddly, he discovered there were no DIN standards to cover pilot's watches where such standards existed for example for diver's watches.

The new "Technical Standard for Pilot's Watches" (TESTAF) was developed by the Aachen University of Applied Sciences and establishes the suitability for professional use as a pilot's watch.

  • View Sinn watches in the TESTAF Series


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