DK Sonic Ultrasonic Cleaner bath in Stainless Steel & dial controls (6 litre)
Ultrasonic cleaning - Wikipedia
Ultrasonic Cleaner, Ultrasonic Retainer Cleaner Machine for Dentures, Aligner, Retainer, Whitening Trays, Mouthguards, 200ML Portable Dental Pod for All Dental Appliances and Jewelry at-Home : Amazon.co.uk: Health & Personal Care