The Streamlight Nano Light, a powerful LED light perfect secondary light for law enforcement and outdoor enthusiasts, is a tiny key chain flashlight powered with a long-lasting LED with a 100,000-hour life span. Measuring approximately 1.5 by .5 inches, the Streamlight Nano Light weighs a mere 0.36 ounces. Built to be sturdy, the light is constructed with machined aircraft-grade aluminum with an anodized black finish. Its 5-mm white LED is impervious to shock. The weatherproof Nano Light has a non-rotating snap hook for easy one-handed operation when it is attached to a key chain and a rotating on/off head switch. The LED provides 10 lumens and offers a run time of up to eight hours.