Sinn 556 I B Blue Dial on Strap

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• Verified Watch Owner Reviews (11 reviews)
SKU: SI-442

Watch Brand: Sinn

Sinn North America

Automatic winding with striking blue dial
• 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: Blue
• Front crystal: Sapphire
• Calibre: SW200-1
• Movement: Automatic mechanical
• Strap or bracelet: Strap
• Manufacturer's limited warranty: 2 years
• Warranty service: RGM or Sinn

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WatchBuys Direct Price: $1,420.00
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 556 I B Blue Dial on Strap
Sinn 556 I B Blue Dial on Strap

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Product Details

This version of the Sinn 556 I Series features a dark blue electroplated dial with sunburst decoration.

Sinn calls this watch their sporty, elegant watch.

The Sinn 556 I B features a case size at 38.5 mm which is satinized. This finish results in a slightly more polished look without the shiny "mirror look". In addition, the dial features applied hour indices for a very clean layout.

Other features of this watch include:
  • Case in 316L surgical stainless steel which is satinized
  • Sapphire crystals on both sides of the watch
  • Double coated anti-reflective covering
  • Dual seal crown lock to improve water resistance
  • Premium Grade (highest) movement

This watch is fitted with a Sinn dark blue calf leather strap and tang buckle.

This watch is water resistant to 200 meters.

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 (11 reviews)

LOVE this watch!

"LOVE this watch!"

Verified Watch Owner Comments: GREAT Sinn model! The 556 is easy to read! Fantastic case size for my 7 inch wrist! BLUE dial color is just stunning! Goes GREAT with the BLUE leather band. Very happy!



Verified Watch Owner Comments: Purchased a Sinn 556 B Blue dial and am very pleased with the watch. Great value for the money. This is a rugged sports watch (200 meter WR and a hardened steel case) that looks like a watch suitable for office wear and will look fine with a suit. Sinn uses an upgraded ETA/Sillita movement.

Most other watch brands in this price range use the basic movement from these movement manufacturers. Sinn is a quality product.



Verified Watch Owner Comments: Very Classy watch. Easy daily-wear size and weight, beautiful color, and a great leather band. You won't be disappointed.



Verified Watch Owner Comments: Photos do not do justice to this blue dial. The watch is a combination of simple beauty and practicality.

All the superior components come together to make this a wonderful tool watch that fits perfectly on my 6.5 inch wrist. I wish I had discovered Sinn a long time ago.

Great watch. Great service.

"Great watch. Great service."

Verified Watch Owner Comments: Pictures don’t do the blue dial justice, it really pops. Quality craftsmanship all around, happy with my purchase.

Great customer service as well, my order was confirmed and questions answered by a rep before shipping.



Verified Watch Owner Comments: Gifted this and it was well received. Keeps great time. Beautiful watch.

Sinn 556i b - A dressy tool watch

"Sinn 556i b - A dressy tool watch"

Verified Watch Owner Comments: I've been refining the collection to just a few pieces.

This is the second Sinn I have purchased from Jon at Watchbuys. As always, impeccable customer service, excellent communications and prompt shipping.

The watch is perfect. It is dressy enough to use for my corporate officer and portrait photo shoots and the occasional sport jacket. It is a tough watch that is simple, elegant and beautiful in its starkness. My other Sinn is a 104i and they compliment each other in purpose and looks. To my eye, I prefer the German watches over the better known Swiss brands. I am a fan of the form over function approach and the Sinn fits right into this way of thinking.

556 Blue

"556 Blue"

Verified Watch Owner Comments: The Sinn 556 Blue is a great add to my collection. The near perfect size, vibrant blue dial, exciting case back and commitment to doing one thing really well makes this a great piece to wear and enjoy.

Highly recommended - any color, any style.

Sweet blue and satinized steel

"Sweet blue and satinized steel"

Verified Watch Owner Comments: Bought two 556’s, the Blue and a Mocha. Pleased with each. Gave my business partner his choice as a gift (30 years since starting company), and he chose the blue. The blue dial is great, but it’s the case that does it for me.

Easy deal with Watchbuys!

Sinn 556 I B

"Sinn 556 I B"

Verified Watch Owner Comments: You can’t get a much better watch than a Sinn 556. Why get an IWC Pilot when the Sinn 556 is just as good (better) at less than one third the money? The IWC has an in house movement, that’s true. But I really think that many in house movements are overrated as well as overpriced.

Are the Beatles better than the Rolling Stones? Are Sinns better than Rolexes? Can a person walk around with $9000 attached to his wrist? I love this Sinn 556 I B with the blue dial. I’m not one of those fellows with ten watches. This is going to be my watch for the next ten years. I couldn’t be happier with it. A classic look with classic proportions but modern inside.

Great version of the 556 I.

"Great version of the 556 I."

Verified Watch Owner Comments: This version of the 556 I with slightly thinner indices and hands give a nice refined look. The blue dial is stunning in person. Good size/thickness for wearing with dress clothes and looks great with jeans.