1,Ultrasonic cleaner, 2, clean little things, high quality. 3, Digital ultrasonic cleaner, 5, ultrasonic cleaning machine FeaturesCleans optical discs such as CD, VCD, DVD, etc. Use only plain tap water to clean Remove dirts effectively; results can be seen with bare eyes! Clean articles to shine just like new ApplicationsOpitcal Disc Cleaning CD, DVD, VCD, etc. Jewelry and Watches Necklaces, ...