The Violight Dental Spa is the only dental cleaner with sonic and UV technology. It uses sonic technology and germicidal UV light (the same kind used to sanitize hospital instruments) to clean and sanitize dentures, orthodontic devices, athletic mouthguards, and teeth whitening trays at a touch of a button. Proven to eliminate up to 99.9% of germs like E. coli and staphylococcus, the unit vibrates 8,000 times per minute and uses tap water to clean dental aides in just 5 minutes. It automatically shuts-off after a 5-minute cycle. UV bulb is rated for 10,000 hours of use. Requires three AA batteries. 4 3/4" L x 5" W x 4" D. (13 oz.)