TUDOR Black Bay 31

31mm steel case, Steel bracelet
CASE: 31mm 316L steel case with polished and satin finish
BEZEL: Stainless steel bezel with polished and satin finish
MOVEMENT: Manufacture Calibre MT5201 (COSC) Self-winding mechanical movement with bidirectional rotor system Integrated construction
DIAL: Anthracite
WINDING CROWN: Screw-down winding crown in steel with the TUDOR rose in relief
CRYSTAL: Flat sapphire crystal
WATERPROOFNESS: Waterproof to 100m (330 ft)
BRACELET: Stainless steel bracelet, polished and satin finish, with TUDOR “T-fit” folding clasp and safety catch