The Royal Oak Perpetual Calendar in stainless steel presents a dial offering contrasting blue tones. The subdials and inner bezel adorn the iconic a??Night Blue, Cloud 50a?? hue of the original Royal Oak.CaseStainless steel case, glareproofed sapphire crystal and casebackSize41??mmThickness9.5??mmWater Resistance20??mDialBlue dial with a??Grande Tapisseriea?? pattern, blue counters, white gold applied hour-markers and Royal Oak hands with luminescent coating, blue inner bezelBraceletStainless steel bracelet with AP folding claspMatchingAccessoriesAudemars Piguet refreshes its accessories collection with six new pairs of Royal Oak Cufflinks.CaseMaterialStainless steelWater Resistance20 mSize41 mmDialBlue dial with a??Grande Tapisseriea?? pattern, blue counters, white gold applied hour-markers and Royal??Oak hands with luminescent coating, blue inner bezelBraceletStainless steel bracelet with AP folding claspCalibre 5134FunctionsPerpetual calendar with week indication, day, date, astronomical moon, month, leap year, hours and minutes.Number of jewels38MechanismSelfwindingPower reserve40 hTotal diameter29 mmNumber of parts374Frequency2.75 hz 19800 vphThickness4.5 mm??