- Matt-blue 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 an independent institute
- Captive diver's bezel with minute ratcheting
- Crown at 4 o'clock to prevent pressure on the back of the hand
- Sapphire crystal glass
- Water-resistant and pressure-resistant to 1,000 m diving depth (= 100 bar), certified by an independent institute
- Low pressure resistant
Striking lines, minimalistic displays and clear readability define the diving watches in the U1 series. A special feature of the U1 B is the matt-blue 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 U1 B are further emphasised by a blue silicone strap.
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.
DNV 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.
Technical details
Self-winding mechanism
26 bearing jewels
28,800 semi-oscillations per hour
Seconds stop function
Anti-magnetic as per DIN 8309
Sapphire crystal glass in front, anti-reflective on both sides
Case back screw-fastened
Crown screwable
Meet the technical requirements for water-resistance, as set out in standard DIN 8310
Water-resistant and pressure-resistant to 1,000 m diving depth (= 100 bar), certified by an independent institute
According to the technical demands for the diving norm DIN 8306
Tested based on European diving equipment standards EN 250 / EN14143 and certified by an independent institute
Low pressure resistant
Date display
Diver’s bezel with minute ratcheting and luminous key mark
Captive bezel
Band lug width: 22 mm
Case thickness: 14.7 mm
Weight without strap: 113 gramme
Indices coated with luminescent colour
Hour, minute and second hand coated with luminescent colour