TUDOR Black Bay 42 mm steel case with satin finish. 60-notch, 12-hour graduated steel bidirectional rotating bezel with stop system for the bidirectional rotating bezel via a mobile end-link at 12 o'clock. Manufacture Calibre MT5612 (COSC) Self-winding mechanical movement with bidirectional rotor system. Black, domed. Sapphire crystal. Waterproof to 200 m (660 ft). Brown leather strap with folding clasp

TUDOR M70150-0001
Tudor Bracelet Sizing Guide