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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 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 AdventurerOpti retail package includes 2 non-rechargeable (disposable) CR123 batteries and a neoprene case with belt loop. Device works with containers with minimum 1.75 in. diameter opening (ie Nalgene wide-mouth bottles).

Specifications:

- 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

Opti w/Solar Bundle Pack