When setting the clock
Rewind a mechanical watch
When not wearing his watch
When cleaning your clock
When you wear your watch in water
For gold watches
Anti reflective coating
Shock
For all types of leather and textile
Temperature
Magnetism
Chemical products
Shock
Avoid any strong shocks such as dropping the clock on the ground. Besides damage to the outer part, it can cause premature wear of materials and components, which will reflect on the clock.