Ergonomic design with a new easy-to-remove twist-off cap.;The first SteriPEN to work effectively with alkaline batteries. Can be powered by alkaline, lithium,or NiMH batteries.;Enhanced LEDs indicate treatmentsize and status of batteries andlamp.;Watertight. No more worriesabout dropping your Classic 3 in abottle or stream.;So easy ... just activate, place inwater, and stir. LED indicatorsflash to let you know when wateris safe to drink.

• SteriPEN Classic 3 with Pre-Filter
• White

SteriPEN Classic 3 with Pre-FilterSteriPEN