Sinn 856 UTC Black Fully Tegimented on Strap

• Verified Watch Owner Reviews (8 reviews)
SKU: SI-099

Watch Brand: Sinn

Sinn North America


Automatic winding with second time zone
• Watch diameter (mm): 40.0
• Watch height (mm): 11.0
• Lug width (mm): 20
• Lug to lug (mm): 47.5
• Weight - head only (grams): 70
• Water resistance: 200 meters
• Case back: Solid
• Case finish: Matte
• Case metal: Tegimented hardened DLC steel
• Dial color: Black
• Front crystal: Sapphire
• Tegimented: Fully
• Inert gas: Filled
• Calibre: SW330-1
• Copper sulphate: Capsule
• Antimagnetic: 80,000 A/m
• Movement: Automatic mechanical
• Strap or bracelet: Strap
• Manufacturer's limited warranty: 3 years
• Warranty service: RGM or Sinn

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WatchBuys Direct Price: $2,570.00
Availability: Temporarily Sold Out





Sinn 856 UTC Black Tegimented on Strap
Sinn 856 UTC Black Fully Tegimented on Strap

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Product Details

We love the Sinn 856 Black Series - its all black finish gives it an attitude that's hard to miss.

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.

The Sinn 856 Black capitalizes on all that's great with the standard Sinn 856, but adds a black case created with Tegiment DLC technology.

A small yellow-green hand indicates the second time zone on a small 24-hour scale.



This watch features "Tegiment" technology. 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 layer has a hardness of 1,200 Vickers which is up to five times harder than standard steel.


The Tegiment layer 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 even further improved by the Tegiment hardening process.



Next, this case offers magnetic field protection of up to 80,000 A/m, among the highest for any mechanical watch. The case back is nickel free offering protection to those with allergic reactions to this metal.

The case features a copper sulphate capsule which reacts with moisture to diffuse and absorb humidity in the watch.

And for those that don't encounter magnetic fields on a regular basis, it's just a great watch to wear every day.



Sand-blasted stainless steel case with black Tegiment DLC technology and solid back. Dial is matte black with Arabic numerals and offset date display at 4. The design and layout of this watch make it extremely easy to read in virtually all light conditions.

Sapphire crystal with luminous hands and hour markers. Watch is water resistant to 20 ATM.

Other features include Sinn's Dehumidifcation Technology which uses inert gas to reduce humidity and to prevent the dial from fogging.

Frequently purchased with this watch:

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 (8 reviews)

856 UTC Black Tegimented is a Winner!

"856 UTC Black Tegimented is a Winner!"

Verified Watch Owner Comments: The 856 UTC is a very high-quality watch, in a very wearable and comfortable size. And with the black tegimented finish on the black leather strap it really flies under the radar and is virtually scratch-proof. Highly recommended!

And as always, WatchBuys delivers!

Great watch, great service

"Great watch, great service"

Verified Watch Owner Comments: Had my eye on this watch for some time. In real life it wears a tiny bit smaller than I envisioned, but I’m a fan nonetheless.

Immediately changed out of the leather strap to a curved end rubber strap (bought an aftermarket model for Rolex GMT 2 which fit fine btw) but then decided to pop for the Sinn rubber strap with PVD butterfly clasp. Pricey for sure, but all together this watch is now so, so dope.

Watchbuys dudes were communicative and shipped perfectly, and faster than expected. The watch was special ordered and supposed to be here this week, but I’ve already had it well over a week, so that’s awesome.

Sinn For The Winn

"Sinn For The Winn"

Verified Watch Owner Comments: I love black watches and GMT complications, so this was a natural fit for me. The watch has quickly become one of my favorites in the collection and gets more wrist time than any other watch I own. It has excellent legibility in the day and night. The date function is there, but it doesn't upset the symmetry of the dial.

It's a tough watch for traveling, and it's not something that will stand out and draw unwanted attention like a Rolex. Perhaps the only drawback is its rugged looks doesn't allow for me to wear it to more formal occasions. So that might be something to consider if you're looking for a literal do it all watch.

My Sinn has been running a pretty consistent +5 seconds a day, so I'm quite happy with the accuracy too.

Great watch

"Great watch"

Verified Watch Owner Comments: This is one great watch, I absolutely love it. I have a 7 inch wrist and this watch fits perfectly. I've really gotten into Sinn and plan on purchasing more.

Can't say enough about WatchBuys, free 2 day shipping!

Better Than I Thought

"Better Than I Thought"

Verified Watch Owner Comments: I have several very good outdoor watches. When I became an Air Force pilot during Vietnam, pilots were always seeking the newest and greatest watch. I had a Rolex GMT Master which has become too valuable to use every day. I stumbled on the 856 UTC. I really like this watch.

First, it is not overstated with bells and whistles. Next, it is easy for me to read the hands. Also, it is very accurate and bullet proof. I also recommend the Zulu strap to give it that final touch. Like my old Rolex, I never take it off for normal wear. My only issue and I anticipated it is that the 24 hour hand is hard to read with my geezer eyes however, it is no issue when I use my glasses.

Great, understated watch

Sinn 856 UTC

"Sinn 856 UTC"

Verified Watch Owner Comments: I have small wrists just over 6 and this watch fits great. Very light weight and comfortable esp on a nato strap. It's running 7-9 sec fast a day right now which isn't unusual. It's a very practical for aviation. I just wish the UTC and second hand had lume.

Great watch

"Great watch"

Verified Watch Owner Comments: I love my 856 so far. The only small complaint I have is the second hand is not lumed.

Sin 856 UTC - A Review

"Sin 856 UTC - A Review"

Verified Watch Owner Comments: Having never had any desire to own an expensive watch, but having always been a connoisseur of fine automobiles (inevitably therefore, German), the passion finally overlapped with my desire to have a precision, mechanical watch (I'd generally been in the $150-300 range). After a metric ton of research, I landed on the Sinn 856 as being the best watch for anything less than $5,000. So far, I couldn't be more pleased. Every week it's gradually getting more accurate - I reset it according to the world atomic clock every Monday. At first, it was 3.2 seconds fast per day. After a month, it's down to 2.5 seconds fast per day. I'm excited to see where it is in 3 months. (People say we shouldn't expect accuracy, that accuracy isn't the point- but it most certainly is. Without the expectation for accuracy, we are hedonites). The styling is better in real life than in pictures, the leather band is comfortable, the finish and glass seem extremely durable. I love the watch. I hope I never lo... - more details