Manual winding
27-525
Combined with a perpetual calendar, this manually wound caliber is renowned as Patek Philippe's thinnest split-seconds chronograph and perpetual calendar movement ever produced, at just 7.3 mm thick.
CHR 27-525 PS Q
Features: Split-seconds monopusher chronograph for left-handers. 60-minute counter. Perpetual calendar. Day, month, leap year and day/night indication in apertures. Date by hand. Moon phases. Small seconds. Diameter: 27.3 mm. Thickness: 7.3 mm. Number of parts: 476. Number of jewels: 31. Power reserve with the chronograph disengaged: min. 38 hours – max. 48 hours. Balance spring: Breguet. Distinctive sign: Patek Philippe Seal.
