86-135 PEND S IRM Q SE

The Patek Philippe calibre 86-135 PEND S IRM Q SE is a manual-wind manufacture movement engineered for complicated desk clocks. Measuring 135 x 86 mm with a 28.55 mm height, this 912-part movement features 83 jewels, a 31-day power reserve, and a 4 Hz frequency. It includes a Gyromax balance, Spiromax balance spring, constant-force mechanism, perpetual calendar, ISO 8601 weekly calendar, and various timekeeping displays, all adhering to Patek Philippe Seal standards.