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.
