This 3.5 quart (3.3 liter) Best Built Digital Ultrasonic Cleaner utilizes 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 100 watts and are more powerful and more durable than the standard wafer transducers found in most jewelry ultrasonic cleaners. Includes a stainless steel lid, heater, a digital timer (5-40 minutes) and variable temperature control 45°—80°C (113°—176°F.) Illuminated front panel and auto-shut off (after 3 hours) make this unit easy to use. 2-year manufacturer's warranty on the transducer, 1 year on all other parts. Made in South Korea.