An ultrasonic cleaner is the best way for a hobbyist watchmaker to clean watch movements, cases, and bracelets. It takes a bit longer than using a (very expensive) watch cleaning machine, but as a hobbyist you can get the same results using this ultrasonic cleaner.
Features:
2 liter capacity is good for basically all watchmaking needs
Timer function
Heat function
Includes a metal basket as well as a repurposed tea infuser for holding small parts