Rolex model Yacht Master reference number 234790. This men's watch features an automatic chronometer movement, a black dial with index hour markers, and is crafted from yellow gold in a round 42 mm case. It includes analog display functions for hours, minutes, seconds, date at the three o'clock position, and comes equipped with a bi-directional rotating bezel made of ceramic. The watch has an sapphire crystal face resistant to scratching, solid case back, automatic winding mechanism based on Calibre 3235 movement rated at 28800 vph beating rate with approximately 70 hours power reserve. Water-resistant up to 100 meters or 330 feet.