Silver-tone stainless steel case. Fixed silver-tone stainless steel bezel. Analog blue dial with luminous markers and hands. Sapphire crystal with scratch resistance. Date display at 3 o'clock position. Powermatic 80 automatic movement (23 jewels, frequency: 28800 vph). Approximate power reserve: 80 hours. Transparent case back. Tonneau shaped case measuring 40mm in diameter and 10.9mm thick. Fold over clasp with safety release lock. Water resistant up to 100 meters / 330 feet. Minute markers on outer bezel ring. Functions: hour, minute, second, date. Swiss made. Prx Series