SteriPEN has long been known as the leader of UV light filtration. Their Freedom model lets you do more and carry less. The compact and lightweight design is easy to use, and the Freedom is just as comfortable in an exotic restaurant as on the side of a mountain.
Put the power of the sun in your pocket and have safe drinking water anywhere. Freedom features an internal, USB-rechargeable battery that allows you to power up just about anywhere: from a wall outlet, a computer or a portable solar panel. Good for 8,000 UV treatments.