Silver-tone stainless steel case with fixed silver-tone bezel. Black dial featuring analog display, silver-tone hands, and luminous markers/index hour markers. Minute markers on the outer rim. Scratch-resistant sapphire crystal. Screw-down crown; solid case back. Powered by Rolex Calibre 2232 automatic movement with 31 jewels and a frequency of 28800 vph (5 Hz). Approximate power reserve: 55 hours. Fold-over clasp with safety release ensures secure fit. Water resistant to 100 meters / 330 feet depth. Functions include hour, minute, second, and chronometer operation.