Audemars Piguet Royal Oak Men’s Watch 41MM Transparent Rose Gold 15412OR. 50 m (5 ATM). Audemars Piguet introduces a diamond-bezel version of their patented double balance wheel that improves precision and stability. The 41 mm 18K rose gold case is assembled with a fixed, matching bezel, 32 baguette-cut diamonds, and a screw-locked crown. Powered by the self-winding 3132 calibre, this timepiece has a 45-hour power reserve.