ESA 9162 Mosaba

For your information, I do not repair this type of watch.

How it works

It is a movement without a pendulum, the resonator used is a tuning fork.

The oscillations are maintained by means of an electronic maintenance circuit containing a transistor.

Apart from a contact between the base and the transmitter, which is used to set the time of the watch and for storage purposes, the movement has no electrical contacts.

The tuning fork functions not only as a resonator but also as a motor.