Automatic mechanical movement with perpetual calendar complication including date, month indication (including leap year), day of the week and moon phase functions accurate for 10,000 years. Features a silver dial crafted from sapphire crystal combined with white gold case material. Case diameter measures 38mm. Chronograph function with flyback complication. Tourbillon mechanism to improve accuracy at different angles. Day and night indicator (light/dark hours). 22K white gold bracelet or clasp typically included unless otherwise specified. Precision timekeeping reflecting Patek Philippe's sophisticated design and traditions of fine watchmaking.