SteriPen Protector Handheld Water Purifier Handheld, chemical-free water purifier that destroys impurities in seconds Uses ultraviolet light to destroy viruses, bacteria, and protozoa Safe and effective process does not alter taste, pH, or other water properties Olive drab color is perfect for military personnel or hunting enthusiasts Comes with 2 non-rechargeable (disposable) batteries and user's manual