1)Use the principle sterilization of ultraviolet radiation ,make your toothbrush clean and antisepsis 2)It will automatic closed the ultraviolet light in two minutes, save the power and trouble. 3)It can be hang one the wall, beautiful 4)It can be opened and placed with one hand, make it easily .but not like the traditional one which need to open the door then take out the brush . 5)With low price, every body can use it . Use 4 pcs AG13 fastener battery .