The Adventurer Opti, 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. When camping, backpacking & hiking, if you won't have access to the power grid for several days a time, Adventurer Opti is the product for you.

The long-lasting UV lamp provides 8,000 water treatments! 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. The Adventurer Opti retail package includes 2 non-rechargeable (disposable) CR123 batteries and a neoprene case with belt loop. This SteriPEN device works with containers with minimum 1.75 in. diameter opening.

Weight: 103g/3.6 oz. with batteries. Size: 15.5cm. (6.1in.) x 3.3cm. (1.5in.) x 2.2cm. (1.0in.) Battery: Uses two CR123 batteries (included) Battery life: Disposable -- 100 treatments (16oz./0.5L); Rechargeable -- 40-50 treatments (16oz./0.5L) UV Lamp Life: 8,000 treatments