NEBO Redline Flex Mid Size Flashlight - The Redline FLEX utilizes Flex-Power Technology, which allows the light to be powered by a single AA battery or a lithium-ion 14500 rechargeable battery (included). The FLEX features 6x adjustable zoom, a dual-direction clip and a powerful magnetic base for convenient hands-free lighting. Convex lens 6x adjustable zoom Anodized aircraft-grade aluminum; water and impact-resistant Dual-direction steel clip Flex-Power Technology Battery charging indicator Powerful magnetic base Micro-USB to USB charging cable included Powered by included lithium ion rechargeable battery (14500, 3.7V, 550 mAh) Can also be powered by one AA alkaline battery with reduced performance (not included)