• Blue electroplated dial

• Case and crown made of high-strength seawater-resistant German Submarine Steel

• Bezel with TEGIMENT Technology and therefore especially scratch-resistant

• Tested based on European diving equipment standards and certified by DNV GL

• Captive diver's bezel with minute ratcheting

• Crown at 4 o'clock to prevent pressure on the back of the hand

• Sapphire crystal glass

• Pressure-resistant to 1,000 m diving depth (100 bar), certified by DNV GL

• Low pressure resistant

Sinn U1 B
Sinn U1 B

Striking lines, minimalistic displays and clear readability define the diving watches in the U1 series. A special feature of the U1 B is the blue electroplated dial.

The luminous white indices and hands provide a strong contrast to the blue dial, ensuring outstanding readability at all times. The distinctive colours of the Sinn U1 B are further emphasised by a blue silicone strap.

The New Sinn U1 B
Sinn U1 B

The case made of high-strength German Submarine Steel is extremely seawater-resistant and also possesses the highest level of non-magnetic properties. Hardened using TEGIMENT Technology and therefore especially scratch-resistant, the captive diver’s bezel with minute ratcheting is virtually impossible to detach by being knocked off.

Sinn U1 B Case
Sinn U1 B

DNV GL verifies and certifies the pressure resistance of the U1 B to a diving depth of 1,000 metres and its temperature resistance and functionality in accordance with the European diving device standards. Users of the U1 B can thus be assured that they are wearing a precise and reliable diving watch on their wrist.

Sinn U1 B Dive Watch
Sinn U1 B

Sinn U1 B

Technical specifications:

Mechanical Movement

• SW 200-1

• Self-winding mechanism

• 26 bearing jewels

• 28,800 semi-oscillations per hour

• Seconds stop function

• Shock resistant as per DIN ISO 1413

• Anti-magnetic as per DIN 8309


• Case made of German Submarine Steel, bead-blasted

• 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

• Pressure-resistant up to 1,000 m diving depth (= 100 bar), certified by DNV GL

• 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 GL

• Low pressure resistant


• Hours, minutes, seconds

• Date display

• Diver’s bezel with minute ratcheting and luminous key mark

SINN Technologies

• Bezel with TEGIMENT Technology, therefore especially scratch-resistant

• Captive bezel

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

• Blue electroplated dial

• Indices coated with luminescent colour

• Hour, minute and second hand coated with luminescent colour


• 2 years

Sinn U1 B Watch Review
Sinn U1 B

The price for the Sinn U1 B is €1820 (including 19% German tax) or US$2080.

For more information visit Sinn Online.