Automatic Chronometer movement (Calibre 2231), Swiss Made. Black Dial analog display with silver-tone hands and hour markers. Minute markers at the outer rim. Scratch resistant Sapphire crystal lens. Fixed domed Oystersteel bezel. Unisex design, round case size 31 mm in Silver-tone stainless steel construction. Screw down winding/crown date clasp equipped with Oysterlock safety mechanism. Solid case back. Water resistant to 100 meters/330 feet. Functions include hour, minute, second and chronometer operation.