It is said that King Charles II of England hid in an oak tree to avoid hunting on his way back to exile. Two hundred years later, to commemorate this history, Britain named three battleships ‘Royal Oaks’. Audemars Piguet also used this prominent name, and Royal Oak became its first luxury sports watch. It was also the most expensive steel watch in the world (born in 1972). The octagonal bezel is fixed by eight hexagonal white gold screws. The manufacture of the Royal Oak case is considered to be the most difficult in the watchmaking industry, including many complicated mechanical and handmade processes. The dial of this Royal Oak stainless steel chronograph you see is decorated with the Royal Series’ iconic large checkered decoration. It is equipped with a chronograph and calendar display function. The central chronograph second hand and speedometer use eye-catching red, and the second hand is At 6 o’clock. Like all Audemars Piguet watches, all movement parts are hand-polished.