Mini Ultrasonic cleaner 1.Clean watches,Jewelry,necklace, eyeglass,etc 2.time can be freely set 3.high quality but low price 1,Mini Ultrasonic cleaner features: 1, a transparent roof automatic turn.2, time can be freely set, the cleaning process time countdown display, the default working time (180 seconds).3, use of microcomputer control, human design, time accumulated automatic protection ...