Destroys viruses, bacteria and protozoa-including Giardia and Cryptosporidium-using ultraviolet (UV) light    Takes 48 seconds to purify 16 ounces of fluid, 90 seconds for 32 ounces    Easy to use-just press a button to start and the SteriPEN shuts off when purification is complete    No pumping,

 Destroys viruses, bacteria and protozoa-including Giardia and Cryptosporidium-using ultraviolet (UV) light    Takes 48 seconds to purify 16 ounces of fluid, 90 seconds for 32 ounces    Easy to use-just press a button to start and the SteriPEN shuts off when purification is complete    No pumping, no chemicals, no test strips, no timekeeping, no lubricating, and no replacement filters required       Weight: 97 grams without batteries    Pre-filter: included     Dimensions: 19.3cm in length    Battery:  4 x AA batteries (not included)    Lamp Life: 8,000 purified cycles (8,000 litres)    operation: push button with LED indicator    Effective against: cryptosporidium, viruses, bactieria, giardia, bird flu and influenza, E coli & salmonella, staph, strep, cholera and other germs