This ultrasonic cleaner is an excellent choice for cleaning jewelry, eyeglasses, watches, dentures, coins, and other small valuables. The 48000 Hz high-intensity ultrasonic wave can remove tarnish on the items quickly. The cleaning tank is large, with a 400ML large capacity, which can meet the cleaning needs of various items. The ultrasonic cleaner has a built-in intelligent timing control system, which can be set for 3-10 minutes of cleaning time, and automatically power off to avoid burning out the cleaning chip.