Sinn (Germany) U1 – Ref. 1010.010 – The Diving Watch Made of German Submarine Steel On Bracelet



1 in stock

Localtime Ltd (Cyprus) is an Authorised Distributor for Sinn Spezialuhren (Germany). Contact us for any models you do not see listed here.

“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. Listed price includes the solid stainless steel bracelet with safety folding clasp and diving extension as in the main photo. Other photos showing the watch on other strap types are for presentation only. If you prefer a different type of strap, feel free to contact us for availability.”



  • Sellita Cal. SW 200-1
  • Self-winding mechanism (automatic)
  • 26 bearing jewels
  • 28,800 semi-oscillations per hour
  • Stop-seconds function
  • Anti-magnetic as per DIN 8309


  • Case made of German Submarine steel, bead-blasted
  • Sapphire crystal glass in front, anti-reflective on both sides
  • Transparent case back made of sapphire crystal glass, anti-reflective on the interior
  • Screw-fastened case back
  • Screw-down crown
  • Meets the technical requirements for waterproofness, as set out in standard DIN 8310
  • Waterproof and pressure-resistant to 1,000m diving depth (= 100 bar), certified by DNV, according to the technical demands for the 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

Sinn Technologies:

  • Captive bezel
  • Bezel with TEGIMENT Technology, therefore especially scratch-resistant

Dimensions And Weight:

  • Case diameter: 44 mm
  • Band lug width: 22 mm
  • Case thickness: 14,7 mm
  • Weight without strap: 113 gramme

Dial And Hands:

  • Matte black dial
  • Indices coated with luminescent colour
  • Hour, minute and second hand coated with luminescent colour

Warranty: 2 years

Straps: We carry a large selection of Sinn replacement straps (with or without buckles), listed separately in our store.


Sinn (Germany)

Production Period

Brand New


U1 – Ref. 1010.010


Time, Date, Rotating Bezel




26j Sellita Cal. SW 200-1

Case Material

Stainless Steel

Case Back

Stainless Steel

Case Size

44mm case, excluding crown at 4h

Lug Width



Brand New – 2 Years Manufacturer's Warranty


FREE (Express & Fully Insured)