... with Isolated-Circuit Design, Large Digital Timer Display and Wide-Diameter Transducer. Features of Ultrasonic Cleaner CD-4800* Isolated-Circuit Design, Keep Water ... * HobbyistsElectronics Components, Mechanical Parts, Firearms, Golf Club* Personal CareJewelry, Watches Straps and Bands, Glasses, Dentures, Toothbrushes, Table-wareSpecifications- Ultrasonic Frequency42,000 Hz ...