The Fontainemelon 606 watch movement, later rebranded under the Valjoux 7750 designation without the day indication, offers a manual wind functionality. Armed with a pin-lever escapement, it features a ratchet mechanism on the dial side and a crown mechanism with a rocker bar. Its functions include sub-seconds, a date hand, Bascule Winding, KIF Shock Protection, pin lever, calendar, hours, minutes, small seconds, chronograph, GMT, and date. This movement was primarily used around 1965.