Yellow gold-tone 18kt yellow gold case. Black rubber strap. Fixed tachymeter scale bezel in black 18kt yellow gold. White dial with 18kt yellow gold hands and index hour markers featuring a luminous coating. Tachymeter track around the outer rim. Analog display. Chronograph functions include three sub-dials for seconds, minutes, and hours up to 12. Powered by Rolex Calibre 4130 automatic movement containing 44 jewels beating at 28800 vph with a ~72-hour power reserve. Scratch-resistant sapphire crystal. Screw-down bezel and crown. Round case shape measuring 40 mm in diameter. Folding clasp closure. Water resistant to 100 meters / 330 feet. Functions: chronograph, hour, minute, small second, chronometer. White dial Chronograph Automatic. Part of the Cosmograph Daytona Series. Swiss Made luxury watch.