This 41 mm timepiece is crafted in sand gold, a new 18-carat gold alloy that hovers between white and pink gold and plays with the light. Its multilayered, openworked movement pairs sand-gold-toned and rhodium-toned hues.Case18-carat sand gold case, glareproofed sapphire crystal and caseback.Size41??mmThickness10.6??mmWater Resistance50??mDialSand gold-toned inner bezel, white gold applied hour-markers and Royal Oak hands with luminescent coating.Bracelet18-carat sand gold bracelet with AP folding clasp.A NEW"SAND GOLD"SHADEThe new Royal Oak Selfwinding Flying Tourbillon Openworked in 41 mm introduces the very first timepiece crafted in sand gold, a new 18-carat gold alloy conferring rich plays of light. Hovering between white and pink gold, its colour changes depending on the angle and light, thus offering varied aestheticCaseMaterial18-carat sand goldWater Resistance50 mSize41 mmDialSand gold-toned inner bezel, white gold applied hour-markers and Royal??Oak hands with luminescent coating.Bracelet18-carat sand gold bracelet with AP folding clasp.Calibre 2972FunctionsFlying tourbillon, hours and minutes.Number of jewels27MechanismSelfwindingPower reserve65 hTotal diameter31.5 mmNumber of parts271Frequency3 hz 21600 vphThickness6.2 mm??