42-mm steel case with polished and satin finish. Bidirectional rotatable 12-hour graduated steel bezel for second time-zone display, with disk in blue anodized aluminum. Self-winding mechanical movement, Caliber T401 with additional mechanism for chronograph function. Screw-down winding crown in steel with TUDOR logo Screw-down pushers in steel at 2 o’clock and 4 o’clock. Steel bracelet with folding clasp and safety catch. Waterproof to 150 m (500 ft)