The INOVA XS features exceptional engineering in an unexpectedly compact, lightweight size. Powered by a single AAA alkaline battery (included), it has a patented optical system - precision-machined aluminum reflector with thermal interface - that provides superior light projection and visibility and boasts an impressive 110 Lumens. With an effective range of 137 feet, its beam is exceptionally powerful for such a compact flashlight. Its push button end-cap switch activates constant and momentary high and low modes. The stainless steel clip makes it a cinch to attach securely to a pocket or waistband and it's light enough to carry with you wherever you go. LONG LASTING ENERGY EFFICIENT LED: LED provides 36,300 hours of light. DUAL MODE: Choose high or low beams, depending on your needs. High beam provides 56 Lumens, low beam provides 6 Lumens. LONG DISTANCE VISIBILITY: Beam has an effective range of up to 190 feet in high mode. DURABLE CONSTRUCTION: This pocket-sized light is crushproof, shockproof, and waterproof. INTEGRATED STAINLESS STEEL CLIP: for easy attachment to pockets or waistbands.