Best Built Digital Ultrasonic Cleaners utilize industrial transducers to create powerful 40KHz ultrasonic wavelengths: short enough to clean the finest details of your jewelry and powerful enough to remove caked-on dirt as well as rouge and other compounds. These industrial strength transducers operate at 50 watts and are more powerful and more durable than the standard wafer transducers found in most jewelry ultrasonic cleaners. The stainless steel construction provides durability, while the illuminated on/off switches provide ease-of-use. This 2 quart unit has a heater which maintains a 65°C (150° F) temperature, as well as a 30-minute timer, and a stainless steel lid . 2-year manufacturer's warranty on the transducer, 1 year on all other parts. Made in South Korea.