The Steripen Classic kills viruses, bacteria and protozoa, including giardia and cryptosporidium, using ultraviolet light. With a single set of four AA lithium batteries, it gives you a massive 200 half litres of water. By far the most effective, lightweight and easiest to use purifier around, it now comes with a prefilter included and an unbelievably great price.
Battery: Uses 4 x AA lithium batteries (not included).
Battery Life: 200 treatments (0.5 litres).
UV Lamp Life: 8000 treatments.
Weight: 162 gms (with lithium batteries)