Detailed Product Description Ultrasonic CleanerUtilize ultrasonic technology to remove dirts, greases and precipitates that adhere on article' surface. Eye Care Glasses,Sunglasses, Contact Lens Accessories and so on. RS4007 Specifications Ultrasonic Frequency42,000 HzTank MaterialStainless Steel SUS303Tank Capacity600 ml ( 1 pint )Timer5 Cycles, with Digital Time DisplayPower SupplyAC 100 ~ 120V, ...