... gold ,silver,jewelry , headwear , brooch , glasses , watch chain ,pen , CD, shave palpus knife , comb , toothbrush , artificial tooth , tea set etc ... all the problems.5.Clock and watch , precision instrument: Have ultrasonic cleaner ,you shouldnt Dismount screw , gear wheel , hairspring spring , ... .5*51*35.5 cm Total Wt: 14.4kg MINI ULTRASONIC CLEANER MINI ULTRASONIC CLEANER(AC 220~240V 50/60Hz )