Sinn 103 St Acrylic on H-Link Bracelet

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• Verified Watch Owner Reviews (12 reviews)
SKU: SI-002

Watch Brand: Sinn

Sinn North America

Automatic winding chronograph in steel on bracelet
• Watch diameter (mm): 41.0
• Watch height (mm): 15.5
• Lug width (mm): 20
• Lug to lug (mm): 47.5
• Weight - head only (grams): 74
• Water resistance: 200 meters
• Case back: Solid
• Case finish: Polished
• Case metal: Stainless steel
• Dial color: Black
• Front crystal: Acrylic
• Calibre: Concepto C99001
• 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: $2,650.00
Availability:  In Stock - Ships Immediately

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Condition:  This Sinn watch is brand new and unworn

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

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Product Details

This is the classic Sinn pilot's chronograph featuring a bi-directional rotating friction bezel made from black anodized aluminum.

Automatic winding mechanical chronograph movement with power reserve of 42 hours. Functions include hours, minutes, subsidiary seconds, date, day and complete chronograph functions.

Case is in polished steel with solid case back.

Other features include screw down crown with protective horns, domed acrylic crystal, screw in back and water resistance to 20 ATM.

Dial is matte black with Arabic numerals and luminous markers and hands.

This watch is fitted with a Sinn stainless steel H-Link bracelet with locking clasp (not quick adjust).

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 (12 reviews)



Verified Watch Owner Comments: Everything is a compromise. The goal is to find the least number of compromises. The same is true about watches!

Both this company and the three Sinn watches I purchased fall under that catagory. Very pleased with the total experience.

As advertised, no surprises

"As advertised, no surprises"

Verified Watch Owner Comments: On the watch: Works as advertised. There were no unknown or unexpected details about the watch. With that, my OPINION of the watch is thus: I like the watch. Having the small seconds takes a bit of getting used to. The readability is quite good and one of the reasons I chose this piece. It is also very easy to differentiate all the information presented on the watch face Everything works without fighting itself for your attention. What surprised me most is how easy it is to read the date! Finally, the lume works great and this is the best watch I've had for telling the time in the dark. I was not sure how I would like the finish on the bracelet. Turns out, it's quite attractive. The biggest dislike is the clasp on the bracelet. I'm used to a button release style clasp. I'm not sure I'll ever get used to nor like the friction (?) style clasp. Should I go for another Sinn, it's likely I'd opt for the strap because of my dislike for the clasp. My biggest regret is that I didn't hold ou... - more details

Readable and accurate

"Readable and accurate"

Verified Watch Owner Comments: Surprisingly readable given size and dial layout. Great vintage look and feel with modern guts. Chronometer-grade accuracy at -1 second/ day.

Stands behind the hype

"Stands behind the hype"

Verified Watch Owner Comments: This watch gets so much love. When I purchased my first Sinn, I was enamored by the 356. When looking at the 103 ST, I thought it was quite hideous. This watch interest is evolving and always being influenced. I was looking for my next piece and I narrowed down only on this guy. I saw numerous versions and went with the 103 ST. This is the tried and true original as they say. I am having a hard time getting used to the mix of polished and brushed/matte surfaces, and am still waiting. I think of this completely as a tool watch and think others may want to consider paying the slight premium to have the matte version. The whirring sound of the motor is akin to the Valjoux 7750. It might sound annoying at first, but you do grow used to it. I have a 7.25 to 7.5 wrist and this guy wears so well. It just kind of disappears into the wrist with the downward lugs hugging the wrist. The bracelet is a must, well constructed. The clasp maybe something to desire for, but you can't go wrong. High... - more details

Watchbuys/Sinn 103 St

"Watchbuys/Sinn 103 St"

Verified Watch Owner Comments: I knew the watch because I have seen it before.

What I didn't know was how excellent the service is from Watchbuys: perfect in every way. Great communication, fast shipping, in short, a pleasure to buy from them and I will be returning!

Buying experience

"Buying experience"

Verified Watch Owner Comments: Watch Buys communication throughout the buying experience was very good. My Sinn 103 arrived on time and is everything I expected.

Wonderful Watch

"Wonderful Watch"

Verified Watch Owner Comments: I went back and forth on what chronograph I wanted to add to my collection. The 103 ST kept drawing me back. I won't usually purchase without trying a watch on, but took a shot. The watch is fantastic, wears great, bracelet is very comfortable. This is a great everyday watch. I would highly recommend it to those in the market for a classic chronograph.

Sinn 103 Acrylic

"Sinn 103 Acrylic"

Verified Watch Owner Comments: I was looking for a pilot’s chronograph with provenance, and considered a number of the classics, including the Omega Speedmaster, Breitling Navitimer, and Porsche Design Chrono 1.

I chose the Sinn 103 on its merits with the additional advantage that it was less than 60% of the price of these fine competitors. I bought the 103 because:

  • I time a lot of things and the combination of the timing bezel and chrono is much more useful than either complication alone (I often am using both simultaneously, the bezel for events under 60 minutes and the chrono for those over 60 minutes).

  • The legibility is unsurpassed in its class, the lume is excellent, and the dial design is both classic and beautiful. I never tire of looking at the dial.

  • Sinn is a great brand, with aviation, military, and tool watch provenance.

Delivery was rapid and Rob and Matt are a pleasure to deal with.

Sinn 103 St Acrylic on Bracelet

"Sinn 103 St Acrylic on Bracelet"

Verified Watch Owner Comments: Meticulous craftsmanship and time honored German engineering and design are what this watch is all about. The case and bracelet are solid and the domed Acrylic crystal hardens back to the classic pilot watches of the early 1960's.

Extremely accurate movement. My watch gains approx. 1.25 seconds per 24 hour period.....chronometer grade. Wonderful classic, rugged, accurate, timepiece.

Sinn 103 St Acrylic

"Sinn 103 St Acrylic"

Verified Watch Owner Comments: I've had this watch for about 1 month now and smile every time I see it. The Breguet numerals, domed acrylic crystal, and friction bezel all work so well together to give a warm, vintage feel.

The watch exudes quality and the Valjoux 7750 has been extremely accurate with no break-in period. Furthermore, the staff at WatchBuys were very knowledgeable and professional.

Highly recommend not only this watch, but also working with WatchBuys!!!

Fantastic Watch, Phenomenal Service

"Fantastic Watch, Phenomenal Service"

Verified Watch Owner Comments: High quality watch, exceeds accuracy average for this movement.

Versatile both on bracelet and straps. Buying process was seamless, Matt, Rob, and Watchbuys staff were very patient with all of my questions and provided speedy shipping to accommodate.

Definitely recommend this watch and Watchbuys.

Great watch

"Great watch"

Verified Watch Owner Comments: Bought it and thought it was one of the best watch I have ever owned. Beautiful, classic and classy, very accurate.

A must have if you like classic watches.