26715OR.ZZ.1356OR.01 Audemars Piguet. The Audemars Piguet Royal Oak Selfwinding Chronograph 26715OR.ZZ.1356OR.01 is a luxury unisex watch that features a 38mm 18K rose gold case and bracelet with a folding clasp, which provides comfort and security on the wrist. The bezel is set with brilliant-cut diamonds and fixed in 18K rose gold, which adds a touch of elegance and luxury to the watch. The dial of the watch is silver-toned with a "Grande Tapisserie" pattern, which is a signature feature of the Royal Oak collection. The silver-toned counters, pink gold applied hour markers, and luminescent Royal Oak hands make the watch easy to read in any lighting condition. The date window is located between 4 and 5 o'clock, which is a useful feature for those who want to keep track of the date. The watch features a flyback chronograph with 60-second, 30-minute, and 12-hour counters at 6, 3, and 9 o'clock respectively. The flyback function allows the wearer to quickly restart the chronograph without stopping and resetting it. This is a useful feature for timing multiple events in quick succession. The watch performs the functions of hours, minutes, small seconds, and date with a self-winding mechanical movement (Calibre AP 2385) with 37 jewels and a power reserve of approximately 40 hours. The self-winding movement ensures accurate timekeeping without the need for manual winding, and the power reserve of 40 hours means that the watch can continue to run for almost two days without being worn or wound. The case has a thickness of 11mm and a solid case back with a sapphire crystal protecting the front. The sapphire crystal is scratch-resistant and provides a clear view of the dial. The watch is water-resistant up to 50 meters, which means that it can withstand splashes of water and can be worn while swimming or snorkeling, but should not be worn while diving. 26715OR.ZZ.1356OR.01 Audemars Piguet Selfwinding Chronograph 18K Rose Gold & Diamonds Unisex Watch