... Ultrasonic Cleaner,Ultrasonic cleaner,mini ultrasonic cleaner Can be used to maintain for communicate and electrical... Ultrasonic Cleaner, Ultrasonic cleaner,mini ultrasonic ... watch chain ,pen , CD, shave palpus knife , comb , toothbrush , artificial tooth , tea set etc. And milk bottle , ... .5.Clock and watch , precision instrument: Have ultrasonic cleaner ,you shouldnt Dismount screw , gear wheel ...