Midsize Rolex Yachtmaster watch, stainless steel case (35mm diameter), special platinum time-lapse rotating bezel, stainless steel Oysterlock bracelet, platinum grained dial, 31 jewel self-winding Oyster Perpetual chronometer movement, quickset date calendar, special Oyster case with shoulders to protect the Triplock winding crown, scratch-resistant sapphire crystal, water-resistant to 100 meters