The Watch: The Rolex Oyster Perpetual Date Ref 15200 has a 34mm stainless steel case with a smooth, polished stainless steel bezel and a sapphire crystal. The dial is a gloss white, with Arabic-style numerals and a date window at the 3 o’clock position. Powered by a Calibre 3135 movement, the Ref 15200 has a 48-hour power reserve and a water resistance rating of 100 meters.