Sinn U1-T SDR Fully Tegimented on H-Link Bracelet


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• Verified Owner Reviews (7 reviews)
SKU: SI-340

Watch Brand: Sinn

Sinn North America


Limited Production Model

Fully Tegimented submarine steel
• Watch diameter (mm): 44.0
• Watch height (mm): 14.7
• Lug width (mm): 22
• Lug to lug (mm): 50.5
• Weight - head only (grams): 113
• Case back: Solid
• Case finish: Matte
• Case metal: Tegimented hardened submarine steel
• Dial color: Black
• Front crystal: Sapphire
• Tegimented: Fully
• Bracelet Tegimented: Fully
• 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: $3,340.00
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

Sinn U1-T SDR Fully Tegimented on Bracelet
Sinn U1-T SDR Fully Tegimented on H-Link Bracelet

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Product Details

This is a special edition of the Sinn U1 SDR, and we've added the letter "T" for good reason - the watch is fully Tegimented.

Unlike the standard Sinn U1 SDR which features a Tegimented bezel, the Sinn U1-T SDR is fully Tegimented on the entire watch.



The Sinn U1-T SDR features the same great case design made in-house from German submarine steel at Sinn's case making facility in Glashutte, Germany. Once the case is complete, the Tegimenting process begins, and when we say "fully Tegimented" we mean what we say - case, crown, black bezel, case back, the bracelet and even the anti-reflective coating.

The combination of the submarine steel and fully Tegimented case create superior scratch and corrosion resistance - in fact the case is up to eight times harder than standard stainless steel watch cases.

And unlike watches made in stainless steel, this watch does not need to be rinsed with tap water with each exposure to a salt water environment.

In summary, the Sinn U1-T SDR is one tough watch that is designed to both last and look great over time.  We love the contrast of the black bezel with the fully Tegimented submarine steel case.




The Sinn U1-T SDR case is made from the same steel that is also used in the construction of the outer hull of submarines. The steel was procured by Sinn from a steel supplier to Emden GmbH, one of Germanys North Sea shipbuilding yards who construct submarines from the very same steel.

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.

Because of the special steel used from the submarine steel manufacturer, the case resists the effects of exposure to salt water and salt water environments. And the fully Tegimented finish protects the case from scratches and abrasions by actually hardening the steel.

The uni-directional ratchet operated rotating bezel is also milled from this submarine steel and is Tegimented. The indices are machined directly into the bezel without the use of bezel inserts, which can corrode or come loose at deep depths.

The international testing lab of Germanischen Lloyd has tested the Sinn U1-T SDR, and determined that the watch can be certified as water resistant to 1,000 meters. This same firm tests submarines for their ability to withstand the effects of underwater use.




Matte black dial with date at 3, Super Luminova on hands and markers, and striking red seconds hand complete the design.

Other features include sapphire crystal with anti-reflective coating, and metal stainless steel bracelet which is also hardened using the Tegiment process.



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 Owner Reviews100% • Verified Owner Reviews (7 reviews)

Sinn U1-T SDR Fully Tegimented on Bracelet

"Sinn U1-T SDR Fully Tegimented on Bracelet"

Verified Owner Comments: This was my first purchase from Watchbuys. They were very helpful in answering any questions I had. I absolutely love the Sinn U-! SDR fully Tegimented so much that I purchased a second Sinn U-1 from them. They shipped the watch out immediately.

What I love about this watch is that is a well crafted heavy duty German made tool diver. Everything about this watch exudes craftsmenship at the highest level.Even though I never sized a H -link bracelet before, it was very easy. The only recommendation is that Sinn either redesign the clasp for the watch by offering another micro-adjustment hole or a half link to get the perfect fit. I found for myself, I need to wear this a little looser. The black PVD bezel on this model really accentuates the watch.

I would not hesitate to purchase another watch from Watchbuys.

Like a tank!

"Like a tank!"

Verified Owner Comments: This watch has a beautiful gray metal color and great wrist presence. The finish exudes quality and durability. The movement is highly serviceable and accurate.

The German standards which this watch meets or exceeds are stringent, not whimsical or contrived. This isn't a piece you will tire of anytime soon like so many other run of the mill designs. Highly recommended.

The perfect U1

"The perfect U1"

Verified Owner Comments: I've had this watch for a month now and it has barely left my wrist.

The legibility of the black bezel combined with the toughness of the tegimented case and bracelet makes this, in my opinion, the ultimate version of the U1.

It looks great on textile and the Sinn red silicone rubber strap, too. If you're looking for a dive watch, you can't go wrong with this one.

Sinn U1-T SDR - Classic Modern Tool Diver

"Sinn U1-T SDR - Classic Modern Tool Diver"

Verified Owner Comments: I love my watch. A Sinn U1 doesn't look like any other watch and has features that much more expensive watches don't have. This watch is fully Tegimented making it a very tough watch that will look great for years to come. I wear all my watches and appreciate a watch that looks good on my wrist but doesn't get banged up with normal everyday use.

Watch Buys was great to deal with and were great with their delivery arrangements on Thanksgiving weekend!

A Watch Collector must have watch

"A Watch Collector must have watch"

Verified Owner Comments: I have a large collection of fine Swiss watches from the major brands but did not own any German watches. My challenges was which one to start with. Well I chose this limited production version of the Sinn U1 that was fully tegimented on a steel strap. It is a very distinctive looking watch. Very clean and easy to read.

Great service from the Watchbuys staff.

Superb Build Quality - A Tank with Class

"Superb Build Quality - A Tank with Class"

Verified Owner Comments: As a designer with an eye towards simple but classic dials - and a watch lover who appreciates technology - few watches hold a candle to this Sinn.

The addition of the tegimented black bezel and bracelet makes this a solid tool watch with and elegant demeanor.

Fits great on my large wrist and is never to heavy that it cannot be worn everyday. Love this piece.  Especially at the price point.

Amazing watch for the money

"Amazing watch for the money"

Verified Owner Comments: I have owned lots of so called "high-end" watches. This is built better than almost all of them and at a fraction of the price. This one has a lot of character. 


Bottom line: If you don't have one, get one!