The Royal Oak CONCEPT FLYING TOURBILLON shines with 208 blue sapphires set in the case and dial. Made entirely of 18-carat white gold, the Royal Oak case measures 38.5 mm in diameter and 11.6 mm thick. Water-resistant to 20 metres, the watch is set with a baguette-cut blue sapphire, while the crown is adorned with a transparent sapphire. The Audemars Piguet Royal Oak CONCEPT FLYING TOURBILLON watch strap is crafted from light blue alligator leather and is expertly hand-stitched, with an 18-carat white gold folding clasp set with a baguette-cut blue sapphire.