... only plain tap water to clean, Remove dirts is effectively Ultrasonic Cleaner CD-7820A can cleans discs such as CDs, VCDs, DVDs ... . Daily Personal Care:Dentures, Combs, Toothbrushes, Table Wares Specifications1. Ultrasonic Frequency:42,000 Hz2. Tank Material:Stainless Steel SUS3033. Tank ... H )8. N.W.:0.97kgs9. G.W.:1.05kgs Ultrasonic Cleaner/jewelry cleaner 750ml/Ultrasonic Jewellery Cleaner