NiteCore HC50 CREE XM-L2 LED Headlamp, Black Battery Type: 1x186502xCR123 Maximum output: 760 lumens Nitecore Headlamps Utilizes a premium CREE XM-L2 (T6) LED Purpose-designed for hiking, climbing, camping and general outdoor recreation All metal high-performance dual-beam headlamp Aluminum "unibody" construction is highly rugged and provides excellent cooling performance Powered by a single 18650 lithium-ion battery (not included) for up to 565 lumens of output