SteriPEN Adventurer Opti
Backpacker Editorís Choice 2011. Germicidal UV light destroys viruses, bacteria and protozoa. 8,000 treatments. Purifies 0.5L (16oz) of water in 48 seconds or 1L (32oz) in 90 seconds. Pocketsize rugged purifier weighs only 3.6 oz with 2 CR123 batteries (included!). Optical water sensor also serves as integrated LED flashlight.