Streamlight manufacturers lights designed for professionals. When you truly rely on a light to get the job done, Streamlight is the brand for you. The Survivor LED is a rugged light applicable for a variety of situations, best suited for harsh, outdoor environments. Small, yet powerful, incredibly lightweight and portable at just 17.9 ounces. The Survivor LED is designed to be usable in all situations with the built in spring loaded clip, you can attach the Survivor to a belt, pack, strap, or other accessory for hands free use. The C4 LED provides up to 140 lumens of light with a peak beam intensity of 36,000 cd - a more focused beam. Four different output modes are selectable from the sonic welded push button switch, High, Low, Moonlight, and Strobe. Use the moonlight mode when every moment of battery life counts, or strobe as an emergency signal; these are the kind of functions that you wont use often, but can't afford to go without. The Survivor LED is built to last and to withstand tough conditions. The LED is protected by a virtually unbreakable polycarbonate lens, and the casing is made of super tough, but lightweight, high impact nylon, tested up to 2 meters of impact resistance. All openings on the Survivor LED are O-ring sealed providing an IPX4 water resistance rating. Perfect for hiking, climbing, spelunking, and much more. Furthermore, the Survivor LED has nearly non-existent operating costs thanks to the rechargeable Ni-Cd 4.8-Volt, 4 cell sub-C battery provides 3.5 hours of continuous runtime on High, or 16 hours on Low mode. This model comes with a 120-Volt AC charger, 12-Volt DC charger, and charger station. AA battery casing is also available so you can use disposable batteries in a pinch.