Sinn 556 A on H-Link Bracelet

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• Verified Watch Owner Reviews (49 reviews)
SKU: SI-279

Watch Brand: Sinn

Sinn North America

Automatic winding mechanical watch in steel on bracelet
• Watch diameter (mm): 38.5
• Watch height (mm): 11.0
• Lug width (mm): 20
• Lug to lug (mm): 45.5
• Weight - head only (grams): 65
• Water resistance: 200 meters
• Case back: Transparent
• Case finish: Satinized
• Case metal: Stainless steel
• Dial color: Black
• Front crystal: Sapphire
• Calibre: SW200-1
• Movement: Automatic mechanical
• Strap or bracelet: Bracelet
• Manufacturer's limited warranty: 2 years
• Warranty service: RGM or Sinn

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WatchBuys Direct Price: $1,620.00
Availability:  In Stock - Ships Immediately

Buy Now Pay Later
Condition:  This Sinn watch is brand new and unworn

Authorized:  WatchBuys is Sinn's official importer and distributor
This watch ships to US, Canada, Puerto Rico, Guam and APO/FPO/DPO locations from NC using these shipping methods

Sinn 556 A on Bracelet
Sinn 556 A on H-Link Bracelet

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Product Details

The Sinn 556 has become one of our best selling watches of all time and for good reason - it offers a great mix of performance, durability and classic Sinn design.

This version of the Sinn 556 is marked "A" for Arabic numbers. 

Sinn's inspiration for the design of this watch is the historic Sinn NaBo clocks, long manufactured for use in cockpits as a navigational tool.  Even today Sinn continues to produce these clocks which are used in both civilian and military aircraft, as well as specialty cars.

We think this watch is one of the most legible that we carry.

The four anchor numerals on the quarter hours provide positioning for a quick read of the time.

And the bold indices and hands play well against the matte black dial providing excellent contrast.  There is a good reason that this design has worked so well in cockpits around the world.

The Sinn 556 A features a case size at 38.5 mm which is satinized. This finish results in a slightly more polished look while at the same time retaining some characteristics of a matte finish.

Notable features of the Sinn 556 A include:
  • Case in 316L surgical stainless steel
  • Sapphire crystals on both sides of the watch
  • Double coated anti-reflective covering
  • Dual seal crown lock to improve water resistance
  • Sapphire crystal back to view the decorated movement
  • Premium Grade (highest) movement

This watch is fitted with a Sinn stainless steel H-link bracelet with locking clasp.

And what is very unusual for watch in this category is that Sinn has been able to engineer a water resistance of 200 meters rather than the traditional 50 to 100 meters in competing watches.

Frequently purchased with this item:

Watch specifications are provided by the respective watch manufacturer and/or other sources. Although we use best efforts to provide accurate information, we reserve the right to make corrections when advised of specification changes and/or content errors.

WatchBuys is the official and authorized North American distributor and importer for Sinn watches.

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 and importer, 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 Sinn Authorized Service Center, RGM Watch Service located in Mount Joy, Pennsylvania. This added benefit saves our clients the time and effort of returning their watches to Germany for repair. This service 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 click here for instructions on returning your 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 UPS 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.

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.

Watch Reviews From Verified WatchBuys Buyers
100% • Verified Watch Owner Reviews100% • Verified Watch Owner Reviews (49 reviews)

Stainless sculpture

"Stainless sculpture"

Verified Watch Owner Comments: This Sinn 556 is a functional work of art, and keeps fantastic time. The more I wear it, the more I love it. Fast shipping, heat communication from Watchbuys. Good stuff.

Easy legibility and crisp aesthetic makes this my favorite watch

"Easy legibility and crisp aesthetic makes this my favorite watch"

Verified Watch Owner Comments: The title says it all, but I'll expound a little bit more. It might be a thing that's not brought up often, but it often takes me a second quicker to read the time than on my other watches, and for some reason I value that more and more nowadays.

The dial is so clean and crisp, with nothing superfluous. I know this is exactly what they were going for and I am exactly the right audience for this type of watch. I have an extensive collection, but most of the other watches will now hit the auction block.

My Sinn 556a

"My Sinn 556a"

Verified Watch Owner Comments: I've had my finger on the trigger to buy the 556 for a couple years , and I wish I would've pulled it sooner! The watch is everything I hoped it would be and more. It's crisp dial and low profile makes it the perfect everyday field watch.

Aside from the beautiful watch, I was MOST impressed with the customer service! I received a call (from a HUMAN BEING) the day I ordered it to verify order details, which made me super comfortable with my purchase. I believe I received the watch two days later. FANTASTIC.

I really couldn't be more satisfied with the entire watchbuys experience. Though I do wish Sinn would grace the States with some stores, I guess I now have a fun pit-stop to look forward to when we take a trip across the pond some day.. 10/10.

A perfect Everyday Watch

"A perfect Everyday Watch"

Verified Watch Owner Comments: The watch arrived quickly and could not be happier with this watch. Truly a classic. Receives compliments everywhere I go.

This is an excellent watch

"This is an excellent watch"

Verified Watch Owner Comments: I was slightly on the fence about this watch. I figured it was either going to be a dud or a homerun for a watch. I am pleased to say it is the latter. I love this watch. Everything about it is executed perfectly. I cannot put my finger on exactly what makes it so great, other than to say it is probably my favorite watch I have ever owned.

Solid Introduction for a timepiece neophyte

"Solid Introduction for a timepiece neophyte"

Verified Watch Owner Comments: This model from Sinn was as advertised by the many glowing reviews I read hear and watched online. After years with a smart watch I kept being drawn to something a bit more solid. I've owned basic watches over the years but this was a perfect entry to the world of collecting and appreciating these machines.

WatchBuys made the experience effortless and I was really impressed by their process and timely shipping.

Beautiful watch & great service

"Beautiful watch & great service"

Verified Watch Owner Comments: Received my 556A and it's a an awesome watch. Bracelet is very nice and fairly easy to adjust. Will say that actually removing the bracelet is another story, even with the drilled lugs it's not an easy chore.

Purchase and delivery from Watchbuys was quick and error free. Definitely recommend!

Great service and customer care

"Great service and customer care"

Verified Watch Owner Comments: The watch came very well packaged and a day before it was supposed to arrive. Before being delivered I was called to confirm my order and to see if I had any additional questions. All concerns were addressed. Would recommend and buy from them again.

Sinn 556A

"Sinn 556A"

Verified Watch Owner Comments: +1 to 2 seconds per day. I have several Omegas with the 8000 series movement, but I’m liking the Sinn more. Looking hard at a 104.



Verified Watch Owner Comments: I'd heard good things about this watch and after enjoying wearing it I see why . It's a perfect watch . For me the style , quality and relative fizz factor are ideal . Very satisfied .

WatchBuys customer service was exceptional . It kind of felt like I was a rich guy buying an expensive suit where a tailor really wants to cover all the bases and keep the customer very happy . Kind of a fun experience . I like German watches .

Love this watch

"Love this watch"

Verified Watch Owner Comments: Initially I thought it might be a tad on the small side for a 7.5 wrist but I figured I needed to give it a chance., I sized it up and was impressed at the level of fit finish and feel it the hand.

I have been wearing this watch as a daily for about 2-3 weeks and I'm loving it. This watch keeps accurate time to about 2-3 secs per day the lume is excellent noticed when I took it camping at 5 a.m. I could see the time!

Would recommend this watch for anyone from small to large wrist as a first or an addition to your collection

Sinn 556A

"Sinn 556A"

Verified Watch Owner Comments: Excellent watch and even better service from WatchBuys. Email notification from them was great when more came into stock. Waited four months as it was out of stock. If your after a 556A don’t wait long as they sell out fast. H link bracelet is comfortable and I can’t complain about the clasp as others have.

Rotor is no longer gold but movement still looks great. Mine is running a little fast but I’ll wait to comment more as it’s still very new to me. Size and legibility are excellent and very hard to compete with. Top AR coating is great too. I was worried about scratching it but so far it’s holding up well.

Love my new watch.

"Love my new watch."

Verified Watch Owner Comments: Watchbuys has provided me with excellent customer service, and my Sinn 556 A is beautiful. I love that it is simple, functional, and very well made.

Great GADA watch

"Great GADA watch"

Verified Watch Owner Comments: Great "go anywhere, do anything " watch. Easy to read and a joy to wear. Perfect size for my 7” wrist.

Classic German Design

"Classic German Design"

Verified Watch Owner Comments: This 556A is a classic German Design pilot/field watch. Perfect size, super legible. All brushed finish gives off tool watch vibes. Great everyday watch.

Customer service from Watch Buys was over and above anything I’ve experienced online before. They called me to confirm the order and delivery date. Getting a little up there in price, but the customer service to match is definitely there.

556 A

"556 A"

Verified Watch Owner Comments: Great time piece, sizing very easy of the bracelet due to provide tools by Sinn.

Great customer service and fast shipping. Will be doing business again with watchbuys in the future

Worth the wait

"Worth the wait"

Verified Watch Owner Comments: I researched the new Rolex Explorer and ran into the Sinn 556a. Great dial layout. Very small date window that doesn’t disturb the dial’s symmetry. Vey solid bracelet.

The dial is super legible at night in minimal light. It took a while to restock but now that I have the watch it was worth the wait.

Great Watch

"Great Watch"

Verified Watch Owner Comments: Attracted by the minimal dial and absolute sweet (for me anyway) spot of the 38mm size. Not disappointed, its a nicely executed and engineered piece.

Very happy with this watch

Daily Wear!

"Daily Wear!"

Verified Watch Owner Comments: Purchased my Sinn 556A two weeks ago and it has been on my wrist ever since and will be my daily wear for the foreseeable future that is until I buy another Sinn. The watch is pure German engineering at its finest. The black matte dial with luminous Arabic numerals at 3, 6, 9, and 12 has to be the most legible of all the watches I own or have owned including the Rolex Explorer. Incidentally the overall build quality, the 200 meter water resistance, antimagnetic, and shock resistance, screw down crown, make this a very good alternative to the Explorer. It is every bit as good. The movement is keeping time to within chronometer specs without actually being a chronometer certified movement. The sapphire crystal is AR coated on both the outside and on the inside. The execution case back includes a sapphire crystal as well. The Sinn H link bracelet is extremely sturdy with hex screws making link removal a breeze. The most important aspect of a good watch is it’s dependability, accuracy,... - more details

Sinn 556a

"Sinn 556a"

Verified Watch Owner Comments: Awesome watch, and excellent customer service. Communication was detailed and watch arrived super fast. Thanks

A Classic Understated Tool Watch

"A Classic Understated Tool Watch"

Verified Watch Owner Comments: I can't say enough good things about this watch in the short time I've had it. The 556a version seems to have been lost in the limelight recently compared to the the I version, which has gotten a lot of press, but in my opinion it totally stands on its own, and deserves any attention it gets.

The matte dial with markers at 12/3/6/9 is just incredibly legible, and has some explorer notes without being a homage. It has its own identity with its clear links to Sinn's aeronautical past, and that design heritage really shines in this simple layout. I got this watch as a go anywhere/do anything model, and can't wait to wear it fishing, in the backcountry, and anywhere else it ends up with me.

So far it looks like it will fill the bill, and I'm totally excited to see how it stands up!

12 3 6 9 is perfection

"12 3 6 9 is perfection"

Verified Watch Owner Comments:

I have always enjoyed the 12 3 6 9 placement and the 38.5 mm diameter size is the perfect size. The bracelet with dual screws was easy to work with and is very secure.

My watch is very accurate.

Sinn 556A

"Sinn 556A"

Verified Watch Owner Comments: Quality watch with awesome finishing. Easy to read and a great size. I thought it may be to small for my 7 1/4 inch wrist. Has good presence and very comfortable.

Watchbuys offers good customer service and fast shipping. Highly recommend

Sinn 556 A H-bracelet

"Sinn 556 A H-bracelet"

Verified Watch Owner Comments: Perfect watch. Excellent customer service.

A few improvements...

"A few improvements..."

Verified Watch Owner Comments: Overall, a great watch! Great case and bracelet finishing, great dial legibility due to the AR coating and large indices, numerals, and hands. The 200 M WR and antimagnetic aspect really make this a daily wearer. However, Sinn came up a bit short due to the cost of the watch. For instance, there are independent/micro brands out there using higher end movements, and much better Lume, for an equivalent price.

Personally, I believe a tool watch, which is using subpar Lume, is not acceptable. Lume isn't nearly as expensive as other technical details (e.g., antimagnetic case). Thus, a few more improvements and the 556A/556I would be a hard timepiece to beat.

Sinn 556a

"Sinn 556a"

Verified Watch Owner Comments: Watchbuys was great to buy from. Communication was superb throughout the process. My original watch had a small defect and they handled the exchange very professionally.

They shipped the next watch to me next day shipping to accommodate my schedule. I love the watch and plan to own more Sinns in the future. This one lives up to all of the hype I had read about online.

Great experience

"Great experience"

Verified Watch Owner Comments: I highly recommend this watch and ordering with Watch Buys! You can’t go wrong with either!

Just an honest review

"Just an honest review"

Verified Watch Owner Comments: If you're here and reading these reviews, then you already know what this watch is and what it's about - German made, Swiss automatic movement (Sellita SW200-1). This is a no nonsense, well thought out and executed wrist watch. I'll give my positives and negatives: Negatives: 1) The steel scratches pretty easily, especially the clasp. That said, the Germans knew this, and made provisions to deal with it. First, they offer the Tegimented version of this watch. If you're really concerned about scratches, buy this version. Second, this watch is brushed steel. A quick rub with a Scotchbrite pad and the watch looks brand new. Seriously. There's a reason there is no polishing on the steel surfaces. 2) My watch was running fast when received. It was about 2 minutes fast for every 24hrs. I took care of it myself and got it dialed in, but I wouldn't recommend doing this on your own to everyone. Positives: 1) The sapphire crystal is fantastic. Some have complained about the AR coating on the... - more details

Great Utility Watch

"Great Utility Watch"

Verified Watch Owner Comments: Very comfortable, easy-to-wear watch with great legibility and versatility. The screw-down crown feels better than those on watches costing many times more. I am glad I chose the bracelet option as it is incredibly well made and easy to size. This watch fits quite well on my 6.5 wrist.

I also am impressed with the buying experience with Watchbuys. I will be a repeat customer.

Quality far exceeds the price!

"Quality far exceeds the price!"

Verified Watch Owner Comments: I have been eyeing Sinn for over a year now. During this year, I have contemplated many other watches under $2000 dollars. I am a 3rd year law student and will soon be an attorney. I wanted a watch that could be worn everyday: casual, business, and sporty. I also wanted a watch with heritage and quality, that I wouldn't be embarrassed to wear around other established attorneys and judges, who own high end luxury watches.

My current grail watch is the Rolex Explorer, which I feel is the perfect everyday watch. But, after purchasing the Sinn 556 I am now in no hurry to save up the money to pursue the Rolex Explorer. The Sinn 556 scratches that itch for the man who wants a true everyday watch. It has the perfect blend of luxury quality and the robust build that inspires you to wear this watch everyday and in every occasion. I highly recommend it.

I will not be selling this watch, even when I purchase the Rolex Explorer one day. 5 stars! Cheers Gents!

556a a year in

"556a a year in"

Verified Watch Owner Comments: I have other watches, but this one always finds its way on my wrist. It's the definition of a daily driver.

Worth every penny

"Worth every penny"

Verified Watch Owner Comments: One amazing thing from buying from watchbuys is I got this baby the next day at no extra charge, love the feel of the bracelet, the crown is buttery smooth and it's keeping time at about 1.2 seconds per day.

The Quintessential Aviator's Watch

"The Quintessential Aviator's Watch"

Verified Watch Owner Comments: As a professional pilot, I've found the 556A to be the quintessential pilot's watch: accurate, legible, reliable. It operates well within chronometer specs, rarely off by more than about a second per day placing it either dial-up or crown-up at night allows a degree of simple regulation, too. The spartan face offers only the information I need, time and date, in perfectly contrasting black & white. The flat dial of the 556A offers absolutely no reflections and the date, though smaller than the 556I's, is highly legible. (Farsighted, I'd been concerned about the date, but I found it sufficiently legible when holding my wrist out with the low-power readers I fly with, it's perfectly legible.) The small, deep date window makes for a pleasantly symmetrical dial, while adding to the watch's utilitarian character. When duty calls, the 20 ATM water resistance permits wearing it in driving rain without concern. Finally, my 556A is on the steel H bracelet, which balances the watch nicel... - more details

Astounded at this tool watch

"Astounded at this tool watch"

Verified Watch Owner Comments: right out of the box, it is all the hype and support behind. solid out of the box, attractive build, screams tool watch. immediately became one of my favorites.

Top notch watch and top notch customer service!

"Top notch watch and top notch customer service!"

Verified Watch Owner Comments: I’ve been interested in the Sinn 556A ever since I first saw a picture of it. Once I read the specs and reviews I knew I had to have it.

The ordering experience through WatchBuys was flawless and they answered every question I had. Once I placed the order my watch was delivered to me the next day.

Getting the watch in person has exceeded all my expectations and is now my only watch in the collection. The build quality is superb and the top grade movement is extremely accurate and beautiful to look at. I highly recommend this watch even if you just like the looks. It will be even better in person.

The guys at WatchBuys will take care of you and provide the best customer service experience you can find.



Verified Watch Owner Comments: Product highly exceded my expectations as did the professionalism of Watchbuy. Will definitely be a repeat customer and highly recommend the vendor.



Verified Watch Owner Comments: Professional merchant processed my order with without delay and care. 556A is an extremely comfortable and well crafted workhorse watch. Craftmanship is in line with my watches costing 5-6 times the price. The 38.5 mm wears like a 40 mm.

Will shop WatchBuy again and Sinn as well.

Great value

"Great value"

Verified Watch Owner Comments: This watch does not seem like a bottom of the range model. Bracelet is top quality, easy to adjust and designed to hold up well and fight annoying sagging over time. If you are on the fence the leather strap or the bracelet, go metal and you won't be disappointed. The watch is mega legible. Tiny date window is tiny and subtle. If you wear reading glasses it is tough to see. Think of it as a date window for those that don't like date windows. You see it if you REALLY want to, otherwise it's just a beautifully functional flat black dial. Watch size at 38.5 sounds small. But the big black dial makes is look and feel more like 40mm. If you are worried about the smaller size, it does not seem small on the the wrist. I have a basic medium sized 7.5 wrist and it looks and sits well. Slides on dress shirt cuffs nicely. I am not sure what Sinn does to the ETA 2824, but it is keeping great time. Over the the 18 weeks I've had it has averaged +/- 4 seconds per day. And over the last 6 weeks i... - more details

Never happier to be a Sinner!

"Never happier to be a Sinner!"

Verified Watch Owner Comments: I received my 556 A a few weeks ago and could be happier with my purchase and experience with Watchbuys! I got it with the bracelet and it is top notch quality! I highly recommend this watch to anyone who is thinking of making the leap into Sinn watches.

Also a huge thanks to Watchbuys for a smooth and fast transaction!

Exactly what I expected

"Exactly what I expected"

Verified Watch Owner Comments: I expected this to be an excellent, straightforward watch and that's exactly what I got. I'm glad I went with the numeral version, for me it's more interesting visually and I love the balance of the dial with the date so easily ignored (until you want to see it).

Great Experience

"Great Experience"

Verified Watch Owner Comments: I am very pleased with the transaction.

Very professional service staff on the phone. Watch arrived the next day. Great communication by email throughout including the tracking. Very happy with the watch itself.

Packed thoroughly and in perfect condition. Recommended.

Ultimate Everyday Tool Watch

"Ultimate Everyday Tool Watch"

Verified Watch Owner Comments: This is probably the most most iconic watch you can by new for under $2,000. It's from a well respected brand in Sinn and the model itself is a distilled version of the brand's famous design aesthetic and really gives you one of THE quintessential modern German sports watches for an extremely affordable price tag.

My 556 A - 5 year report

"My 556 A - 5 year report"

Verified Watch Owner Comments: Love it. I've been wearing my 556 A daily for 5 years now. It still keeps great time and is due for a service but has never had one so far. I wear it for all occasions, including outdoor work and other activities. It's suffered some dings over the years, but that just proves it's a very capable and durable timepiece.

It really is a solid choice if you don't care for the bead blasted case or the other advanced features - or if you just want to go the economical route as opposed to getting the also very capable and slightly more expensive 856.

Fantastic Watch

"Fantastic Watch"

Verified Watch Owner Comments: This watch is great quality and the legibility is top notch. Being someone is is near sighted and uses glasses, I can read the time on this watch without my glasses, compared to my other watches that I either need them for or need to bring the watch closer. The watch design is very simple yet elegant.

The movement is something to admire, I find myself starting at it constantly.

Sinn 556A

"Sinn 556A"

Verified Watch Owner Comments: I've been wearing my new 556A for 4 weeks straight now and can't speak highly enough about it. The case finishing and overall feel is fantastic. I think that the legibility of the A version makes it an easy choice over the I, but makes it less dressy (though I think that this makes it look better on the bracelet).

It has been very accurate at about +6 to +7 seconds per day, but this improves to +3 or +4 if I store it with the crown side up.

Lives up to everything you've read on the forums

"Lives up to everything you've read on the forums"

Verified Watch Owner Comments: This is my first 'real' watch and I couldn't be happier. I was a bit nervous about spending so much on a watch I'd never seen in person but when it arrived it surpassed my expectations. It's hard to describe but it just feels well made when you hold it - the weight, the fine machining of the case, movement decoration. It all comes together in a really nice package. It's the perfect size for my 6.7" wrist and dresses up and down very well. Accuracy has been excellent, about +2 or 3 seconds a day - within COSC standards. Not too shabby for a 'Top Grade' movement. I couldn't be happier with the staff at Watchbuys either. Very prompt and friendly. They even threw in a Sinn branded thumbnail clasp to use with an aftermarket strap, which is a very nice detail. My watch came with a very minor cosmetic flaw on the (hand painted) second hand, most people might not have even noticed it but they were very accommodating, getting a replacement hand under warranty. Great people. When I have th... - more details

556a / WatchBuys

"556a / WatchBuys"

Verified Watch Owner Comments: This is an extremely versatile watch which it can be used everyday watch to dressy. Have several bands I'm considering purchasing so I can change it up whenever I feel the need. 

WatchBuys staff is first rate. From pre-purchase to post-purchase questions they have provided on of the best service I've encountered. Thanks!

556 A

"556 A"

Verified Watch Owner Comments: I wanted a quality daily wear watch that was attractive yet low key. This Sinn fits the bill quite nicely.

The movement is extremely accurate; I check it against my computer at work and it has rarely been off more than a second. The numerals and the anti reflective coating make it very readable. This is at the bottom of the Sinn line, but the downsides are minimal. The size is small by today's standards, but is classic and still wears well.

The case is not tegimented so it will incur some scratches over time. If you can afford the extra expense of the 856 (including servicing) it would be a better choice, but the 556 A remains an excellent watch for the money.

Simply awesome

"Simply awesome"

Verified Watch Owner Comments: Can think of a more utilitarian watch. It tells the time at a glance and does that VERY well.

Incredibly accurate with the top grade movement. Looks great for all occasions and can also take just about any strap you put on it. Can be dressed down or up easily.