The new Royal Oak chronograph from Audemars Piguet is based on the reference 25860. The main difference is focused on the colors of their areas and in the chronograph counters with contrasting shades of either the outer ring or the hue of its central zone. The movement is the same automatic winding caliber 2385 with column wheel and vertical clutch.
Jules Audemars and Edward Piguet were both in their early twenties when they founded Audemars Piguet in 1875. In 1972 AP launched a line of mechanical watches with hexagonal screws that fastened a porthole-like bezel. Thus was born the Royal Oak, in honor of the British Royal Navy's line of ships bearing the same name. The Royal Oak is among many of the most specialized and complex watches produced by this famous manufactory.