Ultrasonic Cleaner Mini High Frequency 650ml Ultra Sonic Tank Bath Cleaning Machine MK188 WhiteUS Plug AC110V Item Type: Ultrasonic CleanerMaterial: ABS + 304 stainless steel Model: MK188 Color: White Capacity: 650ml Ultrasonic Frequency: 48kHz Power: 20WSize: Approx. 180 x 75 x 55mm / 7.1 x 3 x 2.2in Purpose: To remove impurities on coins, gold and silver jewelry, or to prepare cleaning fluid to remove rust Other Functions:  Cleaning Discs: CD, DVD, VCD, etc. Jewelry and Watches: Necklaces, bracelets, glasses, dentures, toothbrushes, tableware Glasses Care: Glasses, sunglasses, contact lenses Daily Care: Dental clinic, comb, toothbrush, tableware How e:  1. Open the lid and fill the stainless steel water tank with water. Warning: Running the device without water may damage the device. 2. Put the object in the water. Subject should be completely immersed in water. Do not exceed the "Maximum" level. 3. Close the lid and connect the power cord to the socket. 4. Press the button, the blue indicator light will light up, and the working time of 3 minutes will start. When the specified time is reached, the indicator light will go out and the cleaner will automatically stop working.