15710ST.OO.A032CA.01 Audermars Piguet Royal Oak Offshore Diver Stainless Steel Turquoise dial. Round Stainless Steel case Stainless Steel bezel. Turquoise dial Luminescent indexes Sapphire crystal. Automatic movement, Time, Date complications. 60H power reserve 42mm diameter 14.1mm thick. Rubber strap Tang buckle. 300m water resistant Screw Down crown Sapphire case back. Audemars Piguet (AP) is a Swiss manufacturer of luxury mechanical watches. The company was founded by Jules Louis Audemars and Edward Auguste Piguet in the Vallée de Joux in 1875. The company has been family owned since its founding. Created the first repeater wristwatch in 1892. They are known mostly for the Royal Oak. The current lineup of models includes the Royal Oak, Royal Oak concept, Royal Oak Offshore, Millenary, Jules Audemars, Haute Joaillerie, and Classique. The “Royal Oak” named after a famous sailing ship of the British fleet. Designed by Gérald Genta, which entered 1972 the market as “the world’s first luxury sports watch”, has a screwed, octagonal case and the integrated metal band. The “tapisserie” dial is another trademark of the watch and the brand. Versions such as Original Extra-Thin “Jumbo”, Mainstream “Mid-Size”, Royal Oak Quartz, Royal Oak Dual Time, dual time zone and 24-hours indication, Royal Oak Chronograph, Royal Oak Offshore, Lady Royal Oak, Royal Oak Perpetual, Royal Oak Concept, Royal Oak Equation of Time, Royal Oak Grande Complication, Royal Oak Chronograph Tourbillon, Royal Oak Tourbillon and Chronograph “Concept Carbon”.