... 750 ml Timer 5 working circles, choose time freely Ultrasonic Cleaner ApplicationsFamily,Office,Beauty salon, Laboratory,Electron workshop, ... etc Specially designed for CD, VCD and DVD cleaning Use only plain tap water Digital program,5 working ... Tightened lid design for effective noise reduction Ultrasonic Cleaner Specification Ultrasonic Frequency 42,000 HzTank MaterialStainless Steel SUS304Tank ...