Manual winding
36-750
The 300 GS AL 36-750 QIS FUS IRM caliber, with 20 complications, beats at the heart of the Grandmaster Chime, our most complicated wristwatch in the current collection. The GS 36-750 PS IRM caliber, launched in 2020, powers Ref. 6301, a Grande Sonnerie which also features a Petite Sonnerie and a minute repeater.