Vevor's 4 Gal. (15L) ultrasonic cleaner is built with sturdy 304 stainless steel, making it an efficient machine for daily or professional cleaning work. The cleaning frequency of 40kHz combined with five 60W ultrasonic transducers can remove stains in a few seconds without damaging the items. This ultrasonic cleaner features a 600W heater and digital timer for precise temperature control and washing times. Designed for various items including earrings, necklaces, rings, and more, you can now get a professional ultrasonic cleaning experience at home.