Ultrasonic Jewelry Cleaner Machine (22.3oz/660ml) with Glasses Ring Silver Glasses Teeth Fixer Professional Sound Wave Cleaning, 5-Speed Digital Timer, 35W 46KHz, Watch Denture Clean BEST VIBRATION FREQUENCY] Our years of research and development have shown that a vibration frequency of 46,000Hz provides the most effective cleaning without damaging items. Bubbles are created in the liquid-filled tank, and when the bubbles burst, a shock wave causes surface dirt to rise to the surface Easiest to Use] The waterproof buttons have only 3 buttons for easy operation, equipped with a 5-segment timer function (90, 180, 280, 380, 480 seconds), which allows you to set the timer according to the degree of stains and cleaning frequency BEST CAPACITY] We collected thousands of consumer demands and feedbacks, and finally chose a capacity of 660 ml with a depth of 45 mm, which allows even large glasses to be completely submerged for better cleaning results. Very convenient for cleaning eyeglasses