The Henzi Pfaff 461 watch movement, utilized from 1957 onwards, is based on the modified Peseux 336 base movement. It is an automatic movement featuring two roller freewheels and a jewel-bearing rotor. The automatic mechanism is incorporated as a module on the base movement. Additionally, this movement includes several functions, namely automatic winding, a sweep second hand, a date function adjustable within a range of +/-24 hours, and a calendar feature.