UV Ultrasonic Cleansers 1. Over 42000HZ ultrasonic frequency, 360 °omni-directional cleaning, dirt in nooks and crannies no longer exists. 2. Ultraviolet sterilization, 260-280 nm UV-C wavelength,kills 99.99% Bacteria and fungi. 3. Can be used on lab tools, instruments and fittings, glasses, watchbands, waterproof watches, household hardware, pen heads, printer heads etc. 4. It has a solid and durable stainless steel tank and delicate cover, greatly protecting all the contents inside from scratching and damaging and reducing the noise effectively while working.