TUDOR Black Bay GMT

41 mm steel case, 'Terra di Siena' brown leather strap. 41 mm steel case with polished and satin finish. Bidirectional rotatable 48 notches bezel in steel with 24-hour graduated anodised aluminium disc in matt burgundy and blue. Manufacture Calibre MT5652 (COSC) Self-winding mechanical movement with bidirectional rotor system Built-in architecture. Black, domed. Steel screw-down winding crown, with the TUDOR rose in relief, with circular satin-brushed steel winding crown tube. Domed sapphire crystal. Waterproof to 200 m (660 ft). 'Terra di Siena' brown leather strap with folding clasp and safety catch.