This product is not available.

Shop similar products

The lightest and smallest water purifier from SteriPEN, the Freedom features an integrated rechargeable battery so you don't have to hassle with swapping batteries before a big adventure.

  • Features

    • Compact purifier itself weighs only 2.6 oz. and measures 5.1 x 1.25 x 0.8 in.; carried with the included USB cable, AC adapter and neoprene case, the total weight is 6.4 oz.
    • Simple to use, the SteriPEN Freedom detects when the device is in water and automatically activates the UV lamp to begin purifying—no buttons to press!
    • Freedom is configured to treat 0.5 liter of water in 48 sec.; a green indicator light lets you know when the treatment is complete and the water is safe to drink
    • To purify 1 liter of water, simply treat the water twice
    • Integrated rechargeable battery is recharged by plugging the device into a computer, AC outlet or solar charger (sold separately) with the included USB cable
    • Includes an LED flashlight that's handy when the sun goes down; activate the flashlight by holding the Freedom horizontal and rotating your wrist 180° 3 times
    • Freedom requires no pumping, chemicals, test strips, extended timekeeping or filters; leaves no aftertaste, will not clog and does not require lubrication
    • SteriPEN system uses UV light rays instead of chemicals to purify water for drinking
    • Ultraviolet (UV-C) light rays safely sterilize clear water by destroying 99.99% of protozoa (including Giardia and Cryptosporidia), bacteria and even viruses
    • Long used by municipal water districts and bottling companies, low-level UV-C light treats water safely; unit's light will not damage eyes or skin when used properly
    • SteriPEN protects you from risks that cause botulism, cholera, dysentery and typhoid, just to name a few
    • Small size fits most containers—use it in cups, mugs, water bottles and canteens; carries easily in a shirt pocket
    • SteriPEN Freedom turns itself off once ultraviolet treatment is complete; light source can be used up to 8,000 times!
    • Use only on clear water, as cloudy, sediment-laden water hinders effectiveness; FitsAll prefilter (sold separately) clears particulates and debris from water
    • SteriPEN Freedom water purifier includes a USB cable, AC adapter and neoprene carrying case


    SteriPEN water purifiers meet U.S. Environmental Protection Agency standards for microbiological water purifiers and have been independently tested by the Oregon Health Sciences University and the universities of Arizona and Maine. For complete test results visit

    Help keep harmful heavy metals out of our air and water by recycling your rechargeable batteries. For information on how you can get started recycling rechargeable batteries, visit the Rechargeable Battery Recycling Corporation website at

    View all SteriPEN SteriPEN
  • Technical Specs

    Best Use


    Field Cleanable


    Housing Material

    Not applicable

    BPA Free



    32 fl. oz. per 90 sec.


    Protozoa, Bacteria And Viruses

    Pump Strokes Per Liter

    Not applicable


    5.1 x 1.25 x 0.8 inches

    Filter Type


    Filter Medium

    Ultraviolet light


    6.4 ounces

    Pump Force

    Not applicable

  • Reviews
    10 reviews with an average rating of 2.6 out of 5 stars

    Loading Reviews...
  • Questions & Answers

    Loading Questions...