CHR 27-525 PS Q

A split-seconds monopusher chronograph with a 60-minute counter and perpetual calendar. It displays the day, month, leap year, and day/night status via apertures, with the date shown by a hand and moon phases included. The 27.3 mm by 7.3 mm movement contains 476 parts, 31 jewels, and 12 bridges, operating at 3 Hz with a Gyromax® balance, Breguet spring, and Patek Philippe Seal.