Power storage of lebanon 7750 movement

What is the Valjoux 7750 movement?

In layman’s terms, the movement pertains to the gears that make your watch tick. It’s like the engine that powers your timepiece. If you dig in a little deeper, you would notice that most watch enthusiasts are partial to the Valjoux 7750, also known as “the world’s greatest chronograph movement ”.

Why was the 7750 so popular?

The architecture of the 7750 lent itself to easier mass-production than did column wheel calibres — but by the mid-’70s quartz was king and there wasn’t the call for a high volume of mechanical chronographs and the movement remained largely dormant.

What is the ETA 7750 movement?

That movement is the ETA 7750 or, as it was formerly and still commonly known, the Valjoux 7750. It is a movement that inspires heated debate among watch connoisseurs, equally revered and ridiculed. But no one can deny the impact this movement has had on the watch industry.

How does a 7750 start-stop-reset work?

The start-stop-reset functions of the chronograph are controlled by a layered switching cam, which is manufactured through a simple stamping process, similar to many other parts of the 7750 movement. This cam is responsible for making and breaking the connection between the movement and the chronograph.

What is Valjoux ETA 7750?

Since the takeover of Valjoux by ETA the movement is also called ETA 7750. This calibre is still produced and is probably the most successful automatic chronograph movement of all times. It serves as basis for several superstructures or modules, including many from other manufacturers.

Does a 7750 have a stop lever?

The reset lever (stop lever) on the central chronograph wheel is constructed from plastic on many 7750s. Chronoswiss was the first watch company to start using a metal stop lever, which ETA subsequently began using as well. According to ETA, the parts made from plastic should not be cleaned during a service.