ozone technology, eliminates up to 99.9% of the germs and bacteria on your toothbrush. Family design can store up to 5 toothbrushes, including electric toothbrush heads. Auto timer, 5-8 minute sanitizing timer, auto start when door is closed and shut off when it is done, Powered by 4"AA" batteries (not included) Easy wipe clean design, no need to clean tray, upward design prevent water trapped in the toothbrush head. Compact design toothpaste holder and wall mount to save space.