This 41 mm stainless steel Chronograph is endowed with the new Royal Oak design evolution and encompasses a ???Grande Tapisserie??? dial in the iconic Bleu Nuit, Nuage 50 hue. The dedicated ???50-years??? oscillating weight is visible through the sapphire caseback.CaseStainless steel case, glareproofed sapphire crystal and caseback, screw-locked crown.Size41?mmThickness12.4?mmWater Resistance50?mDial???Bleu nuit nuage 50??? dial with ???Grande Tapisserie??? pattern, ???Bleu nuit nuage 50??? counters, white gold applied hour-markers and Royal Oak hands with luminescent coating.BraceletStainless steel bracelet with AP folding clasp.CaseMaterialStainless steelWater Resistance50 mSize41 mmDial???Bleu nuit nuage 50??? dial with ???Grande Tapisserie??? pattern, ???Bleu nuit nuage 50??? counters, white gold applied hour-markers and Royal?Oak hands with luminescent coating.BraceletStainless steel bracelet with AP folding clasp.Calibre 4401FunctionsFlyback chronograph, hours, minutes, small seconds and date.Number of jewels40MechanismSelfwindingPower reserve70 hTotal diameter32 mmNumber of parts381Frequency4 hz 28800 vphThickness6.8 mm