Rolex Calibre 3180 automatic movement with 31 jewels and a frequency of 28800 vph. Power reserve approximately 48 hours. Fixed domed fluted bezel in rose gold-tone 18kt Everose Gold. Brown alligator leather strap with tang clasp. Screw-down crown. Solid case back. Silver dial featuring rose gold-tone hands and index hour markers, including minute markers around the outer rim. Analog dial type includes a subdial displaying a day/night indicator for the 12-hour period. GMT function allows tracking two time zones simultaneously. Water resistant to 50 meters / 165 feet.