31mm 316L steel case with polished and satin finish. Manufacture Calibre MT5201 (COSC) Self-winding mechanical movement with bidirectional rotor system. Integrated construction.Power reserve of approximately 50 hours. Screw-down winding crown with the TUDOR rose in relief. Steel covered by a 0.1mm yellow gold cap. Waterproof to 100m (330 ft). Fixed bezel in steel covered by a 0.3mm yellow gold cap. Champagne-colour dial. Flat sapphire crystal. Yellow gold center links at 6 and 12 o’clock. Remaining center links in steel covered by a 0.2mm yellow gold cap. "T-fit" folding clasp with safety catch. The logo on the catch is made of yellow gold