Tudor Black Bay 58 18k, 39mm case, satin finished, in 18 ct yellow gold open case back with sapphire crystal, green, domed, unidirectional rotatable bezel in 18 ct yellow gold with 60-minute graduated disc in matt green anodised aluminium and gold gilded markings and numerals, Manufacture Calibre MT5400 (COSC) self-winding mechanical movement with bidirectional rotor system, 3-link 18 ct yellow gold bracelet with satin finish throughout and 18 ct yellow gold “T-fit” clasp, domed sapphire crystal, waterproof to 200m (660 ft).