Sinn U50 SDR
Sinn’s smaller diving watch with black bezel
The U50 delivers Sinn’s renowned durability and legibility in a 41 mm case diameter, designed for slimmer wrist sizes.
Visually, Sinn’s diver’s watches are recognised by their clear designs, matt black dials and displays that concentrate on the essentials. When it comes to features, the focus consistently returns to typical SINN characteristics.
Both case and crown are made of high-strength, seawater-resistant, German Submarine steel. This type of steel is known for its extremely high strength and exceptional non-magnetic properties, as well as its excellent resilience in seawater.
As with all Sinn diving watches, the rotating bezel is captive within the case to withstand accidental tampering. Because bezels are notoriously subject to exposure and can experience high levels of stress during use, Sinn has taken the additional step to harden the bezel surface using its TEGIMENT Technology. The result provides a robust, scratch-resistant, edge to give added protection for the case.
These features ensure the U50 is perfectly suited to diving use – a fact that has been verified by the classification company DNV GL (international registrar and classification society for professional diving equipment). DNV GL verifies and certifies pressure resistance to a diving depth of 500 metres (= 50 bar) and temperature resistance and functionality in accordance with the European diving equipment standards.
The addition of a black hardened, tegimented bezel unifies the design as well as adds increased durability to this susceptible section of the watch.
25 bearing jewels
28,800 semi-oscillations per hour
Seconds stop 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
Case back screw-fastened
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant up to 500 m diving depth (= 50 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
Diver’s bezel with minute ratcheting and luminous key mark
Bezel with Black Hard Coating on a TEGIMENT Technology basis
Dimensions and Weight
Case diameter: 41 mm
Band lug width: 20 mm
Case thickness: 11.15 mm
Weight without strap: 74 gramme
Dial and Hands
Matte black dial
Indices coated with luminescent colour
Hour, minute and second hand coated with luminescent colour
NB: Small parts and movement components may vary depending upon construction parameters.