... of applications:jewellery,Glasses 3.40W Ultrasonic Cleaner specification:Ultrasonic Frequency42,000 HzTank MaterialStainless steel SUS304Tank ... .Jewelry and Watches, Necklaces, Earrings, Rings, Bracelets, Coins, Watches Straps and Bands etc.------------------------------------------------------------------------------------------------------------------------------ TS-UCK-1000 CD Ultrasonic Cleaner