Audemars Piguet has a 39mm, 8.1mm thick case, so decided to abandon its normal face, and instead chose a black and agate dial with 11 bright-cut white diamonds as hour markers – This situation is becoming less and less in high-end watches. The interval time is also marked by Royal Oak hands with luminous coating. Both versions are powered by a proprietary self-winding 2121 movement, with a 40-hour power reserve and a water resistance of up to 50 meters.