Audemars Piguet Double Balance Wheel Openworked

Audemars Piguet's Royal Oak Double Balance Wheel Openworked, reference 15407ST.OO.1220ST.02, has a 41 mm steel case. The case measures 9.9 mm thick and pairs with a matching steel bracelet fitted with an AP folding clasp. A sapphire crystal covers the openworked dial, which lays bare the skeletonized movement beneath. That movement is the self-winding calibre 3132, fitted with a double balance wheel and a central seconds display. The construction lets the going train and bridges show through from the front. Water resistance sits at 50 metres, a figure the screw-down elements of the case are built to maintain.