The Classic is the workhorse of the SteriPEN family. Its a product that you can consistently rely on for its ruggedness and performance.
The Classic is also the SteriPEN that gives you the longest battery life. Using four AA lithium batteries, the Classic gives you the power to purify an incredible 200 half-liters of water with a single set of batteries, providing you with that extra confidence to know that youll have access to safe drinking water whenever youre hiking or camping in the wild.
Like Journey, SteriPEN Classics tapered end provides a snug fit with water bottles, and with the SteriPEN Fits All Filter, works even with wide-mouth water bottles.