Powered by the ultra-thin selfwinding Calibre 5133, this monochromatic special edition entirely crafted in 18-carat yellow gold combines precision technology with aesthetic refinement. Case Material 18-carat yellow gold Water Resistance 20 m Size 41 mm Dial Yellow gold-toned dial and counters, yellow gold hour-markers and Royal Oak hands with luminescent coating. Bracelet 18-carat yellow gold bracelet with AP folding clasp. Calibre 5133 Functions Perpetual calendar with day, date, astronomical moon, month, leap year, night and day indication, hours and minutes. Number of jewels 37 Mechanism Selfwinding Power reserve 40 h Total diameter 32 mm Number of parts 256 Frequency 2.75 hz 19800 vph Thickness 2.9 mm