Black ion-plated stainless steel case and bracelet. Bi-directional black ion-plated bezel with compass markings. Black dial with luminous hands and index hour markers. Arabic numerals mark the 6, and 12 o'clock positions. Minute markers. Luminescent hands and markers. Automatic movement. Scratch resistant Hardlex crystal. Screw down crown. Screw down solid case back. Case diameter: 43 mm. Case thickness: 15 mm. Fold over clasp with safety release. Water resistant at 200 meters/ 660 feet. Functions: hours, minutes, seconds, calendar, compass. Seiko 5 Mile Markers Automatic Mens Watch SKZ231.