TUDOR watch. Black Bay Fifty-Eight. Satin finished case in 18K yellow gold. Domed sapphire crystal. 39mm case. Green dial, domed. Domed dark brown alligator strap with 18 kt yellow gold buckle. Manufacture Calibre MT5400 (COSC) Self-winding mechanical movement with bidirectional rotor system. Unidirectional rotatable bezel in 18 kt yellow gold with 60-minute graduated disc in matt green anodised aluminium and gold gilded markings. Complimentary green fabric strap included. Waterproof to 200M.