"Worth it's weight!" - Review of Hydro Photon SteriPEN Classic Handheld Water Purifier

If you're backpacking or camping where you have an infinite supply of water (therefore don't need to carry all your water with you), this is a must have. I used it for a week-long trip in the Boundary Waters along w/ the pre-filter (attaches to Nalgene bottles only - the threads are very specific). No problems the entire week. Brought extra batteries but never needed them.
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