Integral movements just like the Valjoux 7750 based motion were created from the ground increase because of their work : a chronograph in cases like this. Some sort of Valjoux 7750 is one of the most known motions. Valjoux is not a maker but the authentic designer regarding the movement. It uses a automatic-winding module connected to the top of the movement, winding in one single way through just one double-click wheel. Initially the use of 17 jewels, present versions lead at 2 this really is a very long lasting, tried and tested motion. Franck Muller makes use of it upon times, plus IWC, BaumeMercier, Cartier, etc.