This Rolex 116523 Daytona - Champagne Diamond Dial  40mm Yellow Rolesor ,2015, screw-down steel back, screw-down crown and push buttons with Triblock triple waterproofness, fixed 18K yellow gold bezel with engraved tachymetric scale, scratch-resistant sapphire crystal, champagne dial, diamond hour markers, Rolex caliber 4130 self-winding movement with chronograph central second hand, 30-minute counter at 3 o'clock, and 12-hour counter at 9 o'clock, approximately 72 hours of power reserve, 18K yellow gold Oyster bracelet with flat three-piece links made from a combination of 904L steel and 18K yellow gold, folding Oyster lock buckle with Easylink 5mm comfort extension link. Waterproof to 100 meters.