Read the instructions of the Ultra Sonic Cleaner.

Use filtered / distilled water water only.

Do not put the whole watch into the Ultra Sonic Cleaner because the vibration of water may loosen the screws, screw back, crown, ... and let the water go into the watch.

You can clean the disassembled watch parts, bracelet and all thing which can be cleaned with water.

But DO NOT clean too many things at the same time because the parts may collide with each other.

Before putting the parts into the cleaner, turn the Ultra Sonic Clean on for about 5 minutes, this can energize the water molecules and increase the cleaning power.