31-260 REG QA

The caliber 31-260 REG QA is an automatic regulator-style annual calendar movement with a central sweep minutes hand and separate hour and small seconds subdials. It displays the day, date, and month via apertures, requiring one adjustment annually, and features a 33 mm by 5.08 mm architecture with 313 parts and 31 jewels. Operating at 3.2 Hz with a 38-48 hour power reserve, it includes a 22k gold off-center minirotor, Gyromax balance, Spiromax spring, and Patek Philippe Seal certification.