Wuven Ultrasonic Cleaner for Dentures, Invisalign, Mouth Guard, Aligner, Whitening Trays, 43kHz 180ML Portable Ultrasonic Jewelry Cleaner Ultrasonic Retainer Cleaner for Home and Travel Use Black is up for auction in Appliances. The current bid is $8.00, 80% below the $40.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.