Sun Port&Acirc; Premium Cordless Ultrasonic Cleaner for Dentures, Jewelry and More (CPT-QXQ) Cleans, whitens and brightens dentures, retainers, aligners and jewelry in just 5 minutes. Sonic vibrations up to 65000 waves per minute Compact design is only 3.5X3.5 inch On/off switch located at the back Uses 2AA batteries