Mophorn 28 and 40khz Dual Frequency Ultrasonic Cleaner 304 Stainless Steel Digital Lab Ultrasonic Cleaner with Heater Timer for Jewelry Watch Glasses Circuit Board Small Parts?22L?

22L Dual Frequency Ultrasonic CleanerHigh efficiency ultrasonic cleaner used for daily or professional cleaning works. It will emit 28/40KHZ ultrasonic wave to deeply wash dirt on valuable's surface, long hole, crevice and shelter. With heating &...