The model number of this Mens watch is 26574ST.OO.1220ST.02.
This Audemars Piguet Royal Oak Perpetual Calendar 26574ST.OO.1220ST.02 watch is water resistant down to 20 m and has the following functions: Date, Day, Month, Moonphase, Perpetual Calendar, Weekday hand. It also has the following extra features: Centre Seconds, Display Back, Luminescent hands, Luminous indexes, Screw-Down Crown.
This watch also comes with a manufacturers warranty.
Please quote in all communication with us regarding this piece.