Let the SteriPEN ultraviolet purifier with pre-filter be your single source for potable water on your next traveling or backpacking adventure.

Features:

- Ultraviolet (UV-C) light rays safely sterilize clear water by destroying viruses, bacteria and protozoa including Giardia and Cryptosporidium
- But if clear water is not available, no worries—the Hydro Photon Pre-Filter clears particulates and debris from water
- Pre-filter fits Nalgene and other water bottles with 63mm wide-mouth openings; pour source water through filter, and clean water enters bottle then use the SteriPEN purifier to treat the water; just press a button and gently agitate the water with a quick stir
- Purifies 16 fl. oz. of water (cold or warm) in less than a minute or 32 fl. oz. in a minute and a half
- Small size fits most containers—use it in cups, mugs, water bottles and canteens
- Watertight seals keep water away from the electronics; rubberized inset grips for secure handling in wet conditions
- Low-power indicator lets you know when batteries need replacing; twist-off cap for easy battery access
- Four alkaline AA batteries purify 20 to 40 16 fl. oz. glasses of water; purify 200 glasses with lithium AA batteries (batteries sold separately)
- Average weight is 8 oz. with alkaline batteries and 6.4 oz. with lithium batteries; weight empty is 3.7 ounces
- Only use SteriPEN independent of pre-filter when clear water is available, as cloudy, sediment-laden water hinders effectiveness
- Pre-filter screen has a square aperture equal to 17 square microns
- Includes SteriPEN purifier, pre-filter, carrying case and instruction manuals
- Bulb life: 8,000 uses