Overview
With the diving watch U1, Sinn engineers succeeded in developing a diving watch in which the quality of material and design gives it superior resistance to external influences under extreme conditions of use. In their search for a steel with the desired resistance, the Sinn engineers found what they were looking for at the German submarine manufacturer ThyssenKrupp Marine Systems: the steel manufacturers supply small quantities of the original steel of the current German submarine production exclusively to Sinn for making diving watches — the very steel of which the external hulls of the German Navy's new submarine class 212, which currently represents the most advanced non-nuclear submarines in the world, are made. This original submarine steel is not only extraordinarily seawater-resistant but is also of the highest non-magnetic quality without any residual magnetism.
To ensure reliably that the rotating bezel of the diving watch does not detach under harsh impacts, it is attached as a captive bezel to the central part of the case.
The water-resistance and pressure resistance of 100 bar (= 1000 m water depth) was certified for the diving watch U1 by DNV. The safety test pressure used for this purpose was 125 bar.
Technical Details
Mechanical Movement- SW 200-1
- Self-winding mechanism
- 26 bearing jewels
- 28,800 semi-oscillations per hour
- Seconds stop function
- Anti-magnetic as per DIN 8309
- Case made of German Submarine Steel
- Sapphire crystal glass in front, anti-reflective on both sides
- Case back screw-fastened
- Crown screwable
- Meet the technical requirements for waterproofness, as set out in standard DIN 8310
- Waterproof and pressure-resistant to 1,000 m diving depth (= 100 bar), certified by DNV
- According to the technical demands for the German diving norm DIN 8306
- Tested based on European diving equipment standards EN 250 / EN14143 and certified by DNV
- Low pressure resistant
- Hours, minutes, seconds
- Date display
- Diver’s bezel with minute ratcheting and luminous key mark
- Bezel with TEGIMENT Technology, therefore especially scratch-resistant
- Captive diver's bezel
- Matte black dial
- Indices coated with luminescent colour
- Hour, minute and second hand coated with luminescent colour
Dimensions and Weight
- Case diameter: 44 mm
- Band lug width: 22 mm
- Case thickness: 14.7 mm
- Weight without strap: 113 gramme
