The all new ETA C07.111 movement makes its debut in the Tissot Powermatic 80.

With a power reserve of 80-hours, it can last nearly twice as long as a comparable movement, such as the 23-jewel ETA 2824 on which it is based. To achieve this level of power reserve, ETA (Swatch Group’s movement production arm) made a number of improvements. The engineers were able to save energy with the C07.111 by reducing the operating frequency from 4 to 3Hz (28,800 vph to 21,600 vph).

Additionally, the use of a high-performance synthetic material (likely silicon) for the escapement also allows friction to be reduced, thus wasting less power. Furthermore, a reduction of the diameter of the barrel-arbor’s core made it possible to lengthen the mainspring, thereby allowing for an increased power reserve.

Posted by:Jason Pitsch

Jason Pitsch is the Founder of Professional Watches. He appreciates good craftsmanship in everything from architecture to automobiles to cameras to clothing. Yet his focus for the past decade has remained consistent on covering just one type: watchmaking.