BBR Audemars Piguet Royal Oak series, Multifunctional perpetual calendar wristwatch, 26574ST.OO.1220ST.03 model, Single version original function, Classic noble

The BBR Audemars Piguet Royal Oak perpetual calendar, reference 26574ST.OO.1220ST.03, pairs a 41mm x 11.4mm 316L steel case with a blue 'Grande Tapisserie' dial. Luminous applied indices and hands sit above calendar subdials and a moon-phase display showing weekday, date, week, month and leap year. A sapphire crystal and Calibre 5134 automatic movement complete the watch.