... .Heating, timing, thermostat 4.Large tank capacity 5.Digital control ultrasonic gold cleaner 1.Low working frequency, low noise2.Working frequency: 40KHZ ... , 60KHZ3.Ultrasonic power: 80w,120w,240w4.Capacity: 2L,3L,6L,10L, ... Watches· Carburetor· Castings· Fuel Injectors· Machined Parts· Stamped Parts· Switches ultrasonic gold cleaner