The Adventurer is half the size of the SteriPEN Classic. Because it’s fast (48 seconds for 16 ounces), light (under 110g/4 oz), easy and effective, it’s perfect for hikers and campers who value powerful products in small packages with no loss of effectiveness. Adventurer is especially effective against common protozoa like Cryptosporidium. Its optional solar charging case let’s you go off the grid—way off. Adventurer ships with 2 non-rechargeable (disposable) batteries, a nylon case and users guide.