The Royal Oak Perpetual Calendar -Quantième Perpétuel- is a complicated take on AP's iconic luxury sports watch. With the first iteration being introduced in 1983, it can be seen as a trailblazer for the complicated 'sports' watch genre. Reference 25820SP.OO.0944SP.02 has a stainless steel case with platinum bezel; the small links on the bracelet are platinum as well.
Extra-thin movement with perpetual calendar and moonphase. Manual finishing of the bridges (polished bevels, satinbrushed edges, perlage on the recesses and hand crafted decorative engravings on oscillating weight components Moonphase made with Physical Vapor Deposited metal onto sapphire
