Audemars Piguet Royal Oak Perpetual Calendar Openworked – Black Ceramic

Case Size: 41 mm.

Material: Brushed black ceramic.

Dial: Sapphire dial with smoked external sub-dials, white gold hour markers, and luminescent Royal Oak hands.

Movement: Self-winding Manufacture Calibre 5135.

Power Reserve: Approximately 40 hours.

Water Resistance: 20 meters.