– Weight 3.8 oz

– Dimensions 6.1 x 1.5 x 1 in

– Lamp Life 8,000 treatments

– Battery CR123 (included with purchase) or RCR123

– Battery Life Disposable — 100, 0.5 liter treatments Rechargeable — 80, 0.5 liter treatments

– Minimium Bottle Diameter 35mm (1.4 inches)


The SteriPEN is a revolutionary new technology using UV light to purify your drinking water. The steriPEN is the ultimate light weight water filter, perfect for hunting, camping and travel. The smallest, lightest SteriPEN®, the AdventurerOpti, uses a revolutionary optical eye to sense the water. The patent-pending technology ensures safe use and provides purification in even the coldest of waters. The new optical sensor doubles as a convenient LED flashlight. It’s a great backup light when camping or taking a night-time walk to refill your water bottle. The Flashlight mode is activated by pressing and holding the single button down for 3 seconds. The clear lamp cover focuses the LED light.

Additional information

Weight 0.5 oz