Stainless steel case and bracelet. Blue dial. Chronograph. Date displays at 4 o'clock position. Perpetual calendar. 12/24 hour time. Alarm function. Power saver function. Mineral crystal. Push button deployMent clasp. Case diameter 40mm. Case thickness 11mm. Eco-drive moveMent. Water resistant at 100 meters (330 feet). Citizen Perpetual Calendar Mens Watch BL5180-57L.