Rolex Calibre 3135 automatic chronometer movement with 28,800 vph and ~48-hour power reserve. Men's analog watch features a white dial accented by silver-tone hands and hour markers. Includes minute markers on the outer rim. Fixed bezel in 18kt white gold, silver-tone stainless steel case measuring 36 mm in diameter. Scratch-resistant sapphire crystal face. Screw-down winding crown with fold-over clasp featuring a safety release mechanism. Black leather strap included. Water resistance up to 100 meters / 330 feet.