We bought this ultrasonic cleaning machine in Lidl (25 euro), and it cleans OK. We like it. The ultrasonic field in water generates waves with high and low pressure. Air bubbles on the surface of glasses, coins, jewelry do some cavitation effect. As for me it is the best ultrasonic jewelry cleaner. But we used only this one, and won't buy another one :)
How to bathe glasses, coins, jewelry, parts? Plain tap water is perfect as cleaning fluid. The cleaning effect can be enhanced by the addition of approximately 3 drops of washing liquid.
Transparent hinged lid and blue interior light
Output: max. 50W
Timer intervals: 90, 180, 280, 380 and 480 seconds
Suitable for CDs, DVDs and Blu-ray discs (cleaning frequency: 48kHz)
Stainless steel tank with capacity markings (max. capacity approx. 600ml)
It is good for jewelry, coins, glasses, dentures, etc.
Accessories: plastic basket, watch holder, holder for CDs/DVDs/Blu-ray discs
Timer function and seconds display