360 Degree Three-Dimensional Cleaning: This professional ultrasonic eyeglass cleaning machine can clean smudges, fingerprints, oil and odors from glasses, jewelry and metal watch bands in all directions. It can clean spaces that are usually hard to clean and protect contact lenses from damage Non-destructive deep cleaning - 45,000 Hz high frequency vibration separates air and water in the liquid to form 50 to 50 bubbles 500 microns, which expands and ruptures under the action of sound pressure, and the impact force continuously washes away the dust, bacteria and oil on the surface of the object USB Charging - The ultrasonic cleaning machine adopts USB charging socket. The ultrasonic glasses washing machine only makes a slight hissing sound, does not affect others or damage your hearing Shock-absorbing and non-slip - The bottom of the ultrasonic washing machine is equipped with 4 shock-absorbing rubber feet , which can be firmly adsorbed on the desktop, reducing the movement of the machine under strong vibration and providing additional support Widely Used - The ultrasonic cleaning machine is used to clean jewelry, glasses, watches , rings, coins, dentures and other small items, make it easier to clean irregular products and restore the luster of items Size: About 21*7*10 cm Quantity delivered: 1 piece