Black Bay 58

Case
Case: 39mm steel case with polished and satin finish
Waterproofness: Waterproof to 200m (660 ft)
Bezel: Unidirectional rotatable bezel in steel with 60-minute graduated disc in matt blue anodised aluminium and silver gilded markings and numerals
Dial: Blue, domed
Crystal: Domed sapphire crystal

Movement
Movement: Manufacture Calibre MT5402 (COSC)Self-winding mechanical movement with bidirectional rotor system
Power Reserve: Power reserve of approximately 70 hours
Winding Crown: Steel screw-down winding crown, with the TUDOR rose in relief, with circular satin-brushed steel winding crown tube

Bracelet
Bracelet: Riveted steel bracelet with polished and satin finish, with folding clasp and safety catch

Reference
M79030B-0001