Audemars Piguet Royal Oak Chronograph 26240ST Blue Dial

About This Watch

The Audemars Piguet Royal Oak Chronograph 26240ST represents a major evolution for the Royal Oak chronograph family, introducing the fully in-house caliber 4401 with flyback functionality. This is the first time the standard steel Royal Oak Chronograph has featured a flyback function, allowing the chronograph to be reset and restarted with a single button press. The caliber 4401 delivers a 70-hour power reserve and features a column wheel integrated flyback chronograph mechanism that is visible through the sapphire caseback. The 41mm case maintains the same slim 11mm profile despite the more complex movement, a remarkable engineering achievement. The blue "Grande Tapisserie" dial features subtly redesigned chronograph counters with a 30-minute counter at 9 o'clock, 12-hour counter at 6 o'clock, and running seconds at 3 o'clock. The vertical-satin surface treatment on the sub-dial registers provides elegant contrast against the textured main dial. This reference represents Audemars Piguet's commitment to advancing the Royal Oak chronograph with fully proprietary technology while maintaining the design language that has made it an icon for over fifty years.