Audemars Piguet brings forth innovation with the its patented double balance wheel geometry that improves precision and stability in this self winding Royal Oak timepiece. The 15407OR.OO.1220OR.01 has a 18 K pink gold case that is 41 mm in diameter and 9.9 mm in thick with a glare-proof sapphire crystal, exhibition caseback and a screw-locked crown. The openworked steel dial is slate gray with luminescent pink gold hour markers and hands. The 15407OR.OO.1220OR.01 is powered by the self-winding 3132 caliber which has a power reserve of 45 hours, offering functions such as hours, minutes and center seconds. The case is paired with 18 K rose gold bracelet with an AP folding clasp. It has a water resistance of 50 meters (164 feet).