New authentic Rolex Day-Date 40. Features an M228238 model number, polished 18kt yellow gold case set in a solid dial and bezel, black diamond brioilante-cut hour markers on the face, presidential style yellow gold bracelet with crown clasp closure, automatic movement powered by Rolex Calibre 3255 engine, date display at position three (3), day function visible through the crystal, sapphire crystal for scratch resistance, round case shape measuring 40mm in diameter, solid case back, water resistant to 100 meters or approximately 330 feet.