The Pro Elite Ultrasonic Jewellery Cleaner adds dual transducers for even more powerful cleaning action. The ultrasonic cleaner is designed to safely and effectively clean jewellery, watches, eyeglasses, sunglasses, coins, metal objects, baby products, dentures, mouth guards, cosmetics, and more. The unit has a built-in cooling fan to reduce heat to the unit. The power cord can be detached so you can safely remove the water and not accidentally get the cord wet. The unit and power cord has been safety tested and certified by TUV and UL.