Professional diver's ISO 6425 certified Movement Automatic winding mechanical. Characteristics Steel case and bracelet. Exposed case back and crown. Unidirectional rotating bezel. Mineral glass with anti-reflective treatment. Exposed case back and crown. Screw-locked crown. WR 20 bar. Dimensions Case diameter 41 mm Further details Item code NY0120-01X Technology Function Solotempo Movement type Mechanical Case material Steel Case finish Steel Ring nut Unidirectional swivel Case back With screws Crown With screws Glass Mineral Strap type Strap Strap material Rubber Strap color Black Dial type Analog Dial color Yellow Waterproof Diver's ISO Case diameter (mm) 41.00 Thickness (mm Weight (gr) 13.70 Â 100.00.