41-mm steel case with polished and satin finish + Bidirectional rotatable 48-notches bezel in steel with 24-hour graduated anodized aluminum disk in matte burgundy and blue + Manufacture Caliber MT5652 (COSC) Self-winding mechanical movement with bidirectional rotor system Built-in architecture + Steel screw-down winding crown, with the TUDOR rose, 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