Professional Ultrasonic Jewelry and Eyeglass Cleaner Cleaning Machine (Light Blue) Powerful unit that gently cleans in minutes with its Powerful 42 000 cycle ultrasonic energy wave 42,000 cycle ultrasonic energy wave feature cleans dirt, dust and grime away Creates millions of microscopic cleansing bubbles - Automatic 3-minute cleaning cycle and auto shut-off Automatic three-minute cleaning cycle and auto shut-off; Quiet operation, Solid State circuitry, and extremely easy to use Stainless steel cleaning chamber tank; Detergent can be added to water for enhanced cleaning; Also cleans tarnished items