7750 movement energy storage

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 ”.

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.

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.

How does a Cal 7750 work?

The basic version of the cal. 7750 has semi-instantaneous digital date and day-of-the-week indicators that can be rapidly reset via the crown Capt and his team positioned the chronograph hour-accumulating wheel (driven directly by the barrel) on the front.

What is a 7750 caliber?

The same is true for the caliber “7750”. The four-digit code stands for the chronograph caliber with coulisse-lever escapement from Valjoux (named after its origin, the Vallée de Joux). With a power reserve of 42 hours and a frequency of 28,800 vibrations per hour, at first glance, the movement does not knock you off your feet.