Sinn 105 St Sa on H-Link Bracelet

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• Verified Watch Owner Reviews (8 reviews)
SKU: SI-542

Watch Brand: Sinn

Sinn North America

Bead blasted pilot's watch with Tegimented bezel
• Watch diameter (mm): 41.0
• Watch height (mm): 11.9
• Lug width (mm): 20
• Lug to lug (mm): 46.5
• Weight - head only (grams): 73
• Water resistance: 200 meters
• Case back: Transparent
• Case finish: Matte
• Case metal: Stainless steel
• Dial color: Black
• Front crystal: Sapphire
• Tegimented: Bezel only
• Calibre: SW220-1
• 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: $1,960.00
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 to US, Canada, Puerto Rico, Guam and APO/FPO/DPO locations from NC using these shipping methods

Sinn 105 St Sa on Bracelet
Sinn 105 St Sa on H-Link Bracelet

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Product Details

Focused on Function

The Sinn 105 Series is a collection of watches designed for wherever your adventures may lead.

While it may look like a pilot's watch, the versatile Sinn 105 St Sa boasts a diverse range of functions. 

With a bead blasted case, a Tegimented 12 hour GMT bezel, a day/date display, and 200 meters of water resistance, the Sinn 105 St Sa packs a little bit of everything into a whole lot of watch.

Inspired by the Sinn 104

Since its introduction in 2013, the Sinn 104 Series has quickly become one of the best selling watches in the company's history.

When we released a special edition bead blasted Sinn 104, it was a major success.  Our clients were thrilled to have a more sporty alternative to the traditional polished Sinn 104 case, and the Sinn 105 Series incorporates this same matte bead blasted finish.

A primary advantage to this matte case is increased resistance to scratches and other blemishes, which are much more visible on a highly polished case.

Watches in the Sinn 105 Series also feature a DLC Tegimented bezel and a new dial design.

Sporty Design

Although this watch takes its cues from pilot's watches, its design and variety of functions make the Sinn 105 St Sa extremely versatile.

The rounded, pill-shaped hour markers are highly legible and offer a stark contrast against the dial.  An orange seconds hand stands out against the black and white dial and gives the watch a sporty look.

The ratcheting bezel is of Sinn's design and will not snap off the case if hit due to its screwed bezel construction.  It is Tegimented with a DLC finish.  By installing a 12 hour rotating bezel, Sinn gave this watch an optional second time zone without the need for a second hour hand.  The 12 hour bezel also features count-up minutes or seconds.

And to make things even more interesting, the unique vertical date display at 6 alternates between German and English if you are trying to brush up on your German language skills. 

Important features of this watch include:
  • Stainless steel case, bead blasted matte finish
  • Captive Tegimented bezel with DLC finish
  • Sapphire crystal on both sides
  • X1 SuperLuminova on the hands and hours (glows green)
  • Water resistant to 200 meters
  • English and German day display
  • Low pressure resistant
This watch is fitted with a bead blasted Sinn H-Link steel bracelet with a locking clasp.

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 (8 reviews)

105 ST SA

"105 ST SA"

Verified Watch Owner Comments: I had been looking at the 104 for more than 2 years. I loved everything besides the polished case and ever so slightly busy dial. I wanted something with a bit more flair and something that was a little more every day capable, this is relative and specific to me obviously. Enter the 105, I was instantly hooked, it was what I had been waiting for from Sinn. This is my first real watch so take this with a few grains of salt. I'm not a watch snob but I knew I wanted an automatic no acceptions, I'm a cry once buy once guy. No matter the financials this is not a throw away or consumable item. Enough blabbering how is the damn watch? It's everything I had hoped and researched for and nothing else. The sandblasted case finish is amazing, matte steel, it plays with the surrounding light just as you'd expect. Subdued, but subdued by necessity, toolish. The case itself is machined to perfection, no surprises here. The transfer from lug, to main case, to crown guard is exceptional. Smooth and... - more details

My first Sinn!

"My first Sinn!"

Verified Watch Owner Comments: Thank you Watchbuys for an excellent purchasing experience. The post-purchase follow-up phone call with one of your customer service reps was great. It made me feel as though I was a truly appreciated customer.

My Sinn 105 St Sa is everything I hoped it would be. Very please with all aspects of the purchasing experience. Thank you!

A highly useful modern tool watch

"A highly useful modern tool watch"

Verified Watch Owner Comments: The Sinn 105 has everything I look for in a tool watch. The domed crystal allows for an unimpeded view of the crisp, legible, symmetrical dial underneath. Day and date at a glance are highly useful in my daily routine.

The black bezel, bead blasted case, and bracelet are nicely built without the bling I usually don't need. The size and thickness make this watch comfortably wearable. The only negative for me is the clasp. I don't want a diver's extension on a watch like this. I want tool-less micro adjust. Please Sinn. Otherwise, a fantastic watch!

great watch, as reviewed elsewhere

"great watch, as reviewed elsewhere"

Verified Watch Owner Comments: As can be seen on reviews on YT, this watch is a beautiful and fantastically functional watch. The face is a beautiful matte black, the hands and hour markers are clear and unambiguous without being ostentatious, The bead blasted SS finish is even and pleasant, and the dark tegimented bezel is beautiful and functional.

Also of note, the lume is excellent. The time can be read in all hours of the day and night in all light conditions.

On the down side, the matching bracelet is a bit loose, as has been mentioned in online reviews. I would consider the strap version over the bracelet were I purchasing this watch again.

With respect to accuracy, it seems to lose a second or two a day.

German Excellence

"German Excellence"

Verified Watch Owner Comments: After owning this fine German piece for a few weeks now, I finally feel comfortable leaving a reviews. To put my opinions into perspective, my collection ranges from $20-$6k per piece. Firstly, and perhaps most importantly for some, the accuracy is more than acceptable, with mine running +/- 3 seconds per day. Secondly, the looks. This watch is really stunning yet understated in the metal. The matte dial and anti-reflective coating is flawless. Highly legible and functional complications with the bezel fulfilling numerous practical abilities. I generally run from day-date or even just date only watches like the plague, they never look symmetric or well done. This watch is a complete exception, perfectly executed. I bought this to be an everyday beater with approx half my time on computer and the other half with hands on patients and I have no doubts this watch will hold up for some time. I look forward to my next Sinn timepiece from Watchbuys! Very unique personal and professiona... - more details

Fantastic Watch!

"Fantastic Watch!"

Verified Watch Owner Comments: Love the modern and unique design of this watch. I purchased it with the bracelet but it looks just as good on all of the various other straps Ive tried with it. This watch is a 10 out of 10!

My first Sinn and I'm impressed

"My first Sinn and I'm impressed"

Verified Watch Owner Comments: Bought this after making a decent profit off a 16800 Submariner that I had for nearly a decade. Love the unique look with the day/date at the 6 o'clock index. It's incredibly well built and quite accurate. My only minor gripe is there is room for improvement in the clasp. I'm not worried about it failing, but it doesn't feel as well-engineered as the rest of the watch.

Sinn addicted

"Sinn addicted"

Verified Watch Owner Comments: From the first EZM1 to now more than 15 Sinn watches I continue to be impressed with the passion for engineering, design and as Louis Sullivan said, "form follows function.” The new 105 is beautiful in the stark simplicity of the dial making reading information instant.

And, the matte bezel and satinized finish makes this tool watch a touch softer on the eyes. Nothing more can be said about the Watchbuys team. They got it right. Very informed about every detail of their offerings, attentive to the smallest concerns and I feel after all these many years buying from them that they are my friends as they would certainly be to first time buyers as well. This is how a community is formed.