Rolex Datejust Lady 31 Mother Of Pearl Dial 18K White Gold President Automatic Ladies Diamond Watch 178159MDP. 18kt white gold (diamond-set lugs) case with a 18k white gold Rolex President bracelet. Fixed - 18k white gold diamond-set bezel. Mother of pearl dial with silver-tone hands and diamond hour markers. Automatic movement. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Case diameter: 31 mm. Round case shape. Concealed Crown clasp. Water resistant at 100 meters / 330 feet. Functions: date, hour, minute, second.