Buy on Amazon : br Nitecore HC50 565 Lumens CREE XM-L2 LED headlamp with Genuine Nitecore NL186 18650 2600mAhbr br Purpose-designed for hiking climbing camping and general outdoor recreation br Powered by a single 18650 lithium-ion battery for up to 565 lumens of output br High-efficiency circuit provides up to 400 hours of runtime br A custom catoptrics-based system produces an extremely wide 100 beam angle br Bundle includes Nitecore NL186 rechargeable 2600mAh 18650 battery and two EdisonBright CR123A Lithium batteries