Iriver Blank Portable Toothbrush Sterilizer, TBS-100, Automatic Sterilization, Antibacterial Material, Removable Structure, Travel, 3clolrs (White) Cause 99.9% bacteria sterilization of the remaining cavity after brushing In with mirror, more practical use Adopt a removable structure + antibacterial ABS material Use AA type of battery (not included) can be used to operate the sterilization function, in the room so that you can take advantage of USB cable (included) 8.4 x 2 x 1.1 inches, 0.2 pounds