Patek Philippe R-AL-27-PS

The R-AL 27 PS is a self-winding movement manufactured by Patek Philippe. It features a minute repeater with two classic gongs and a 12-hour alarm complication with a chiming mode indicator. The movement measures 30mm in diameter and 8.23mm in thickness, operates at 21,600 vph, and provides a 43 to 48-hour power reserve from 561 parts. It includes a 22K gold micro-rotor and is an in-house caliber. It powers the Minute Repeater Alarm Ref. 1938P-001, a 30-piece limited edition.