Rolex Oyster Perpetual Day-Date 18038. 36 mm 18k yellow gold case. 18k yellow gold fluted bezel. Refinished black dial with yellow gold hands. Day and date display. 18k yellow gold presidential band with an 18k yellow gold fold over clasp. Will fit up to a 7.5 inch wrist. Water resistant. Automatic chronometer movement. Sapphire crystal glass. This watch is backed by a one year warranty.