Excellent for minimalist campers and for home emergency kits, this hand-powered version of SteriPEN purifiers does not require batteries. It treats 1L of water with 90 seconds of cranking.

• Kit includes a BPA-free bottle, lamp protector, and SteriPEN water bottle pre-filter.
• UV lamp supplies 8000 1L treatments.
• Indicator lights signal sufficient cranking speed and 90 seconds of good cranking.
• Works with any wide-mouth 1L bottle.
• Uses no batteries.