... Timer 5 working circles, choose time freely Ultrasonic Cleaner ApplicationsFamily,Office,Beauty salon, Laboratory,Electron workshop, ... glasses,Watchband,Waterproof watch, Household hardware,Seal,Pen-head,Printer-head.3. Disk(CD,VCD,DVD), Denture,Toothbrush, ... Tightened lid design for effective noise reduction Ultrasonic Cleaner Specification Ultrasonic Frequency 42,000 HzTank MaterialStainless Steel ...