| Reference Ocarat | #21933 |
| Reference | 403.031 |
| Brand | Sinn |
| Product Type | Watch |
| Gender | Men Women |
| Color | Black |
| Material | Steel |
| Material Quality | Stainless Steel |
| Warranty | 3 years |
| Thickness (in mm) | 13,30 |
| Diameter (in mm) | 44,00 |
| Manufacturing | Germany |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Round |
| Case Weight (in g) | 105,00 |
| Bezel | TEGIMENT treatment Unidirectional Visual Countdown |
| Watch Case Back | Screwed caseback |
| Crystal Shape | Flat |
| Glass Quality | Sapphire Crystal |
| Glass Treatment | Double Anti-Reflective Coating |
| Watch Case Types | Date |
| Buttons | 1 Crown |
| Screw Crown | Yes |
| Water Resistance (in ATM) | 500 |
| Movements | Quartz |
| Movement Type | Swiss Movement |
| Movement Brand | ETA |
| Calibers (Movements) | ETA 955.652 |
| Calendar and Time | Dates Hours Minutes Seconds |
| Timekeeping and Measurement | Hacking seconds device |
| Display Type | Analog (hands) |
| Display Specifications | Arabic Numerals Luminescent hands and indexes SuperLuminova |
| Techniques and Mechanics | Rotating bezel |
| Bracelet Material | Steel |
| Strap Color | Gray |
| Watch Clasp | Single Deployment Clasp |
| Lug Width (in mm) | 22,00 |
| Activities | Swimming / Diving Technical Adventure Yachting / Sailing |
The Special Forces Mission Counter. The operation that made Germany's elite GSG9 police unit famous worldwide: the rescue of the Landshut aircraft hostages on 18/10/1977 in Mogadishu. That mission became as legendary as the dive watch worn by its members.
The Watch The standout feature of this watch is its Hydro technology. The movement, dial, and hands are directly mounted in a clear liquid with a refractive index identical to that of sapphire crystals, eliminating reflections on the dial and hands through the sapphire crystal. This technology ensures perfect legibility and waterproofness at any depth.
Fitted with a steel bracelet and a deployant clasp, this model's defining feature is its water resistance. It can accompany you in underwater activities down to 5,000 meters depth - that's 500 atmospheres. The case itself is water-resistant to 12,000 meters. These ratings have been tested and certified by Germanischer Lloyd, the naval classification and international technical insurance company.
In search of a steel capable of withstanding extreme conditions, SINN's engineers - working alongside German submarine manufacturers - developed a small-batch production process using the same steel found in German submarines. This steel is not only extraordinarily water-resistant, but also boasts the highest antimagnetic rating with zero residual magnetism.
Topped with a flat sapphire crystal featuring double anti-reflective coatings, the round case is crafted from submarine steel. It measures 44 mm in diameter, 13.3 mm thick, and weighs 105 grams without the bracelet.
The case is fitted with a unidirectional rotating grey bezel that provides a visual countdown function. To prevent accidental rotation, the bezel is secured to the case in such a way that it cannot be lost. The bezel has undergone TEGIMENT anti-impact treatment - a surface hardening technology that effectively protects stainless steel against scratches.
The black dial features luminescent white hands and hour markers, with a date window at 3 o'clock. The screw-down crown is positioned at 10 o'clock.
The Movement This watch houses a Swiss ETA 955.652 quartz movement. This 7-jewel caliber displays hours, minutes, seconds, and the date. It is fitted with a Stop-Second device for precise time-setting to the exact second.




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Watch Diving Watch UX GSG 9 Steel Bracelet
(Ref. 21933)