An ultrasonic washer or ultrasonic cleaner is a tool that cannot be missing in the mini-workshop of every watchmaker. Thanks to it, we can clean both the bracelet, the case and movements, both mechanical and electronic.
But if we are not careful we can spend a lot of money on an ultrasonic cleaner.
In this video we analyze an ultrasonic washing machine that for a cheap price ($ 20) can give us good results.