U-Boat Men's 'U-42' Swiss Automatic Titanium Watch, Color:Brown (Model: 6475) Automatic mechanical chronograph modified. Displays hours, minutes, seconds, power reserve of 44 hours 53mm diameter titanium case with charge axis, stop crown lever, stops glass handles and sapphire glass Made with a bi-directional rotating and lockable bezel. Brass black dial and brass hands Personalized rotor, in silver, 3 bridges construction; case fixed with 6 hexagon screws and watertight on axis; handcrafted brown leather strap with a titanium tongue buckle Water resistant to 990 feet (300 M):suitable for scuba diving to a depth of 30 meters for up to 2 hours