Lightweight, small size, powerful brightness. You need to have a look at Acebeam H17, the best lightweight led headlamp. With a compact, waterproof aluminum body, the easy-to-operate H17 headlamp is power-packed throwing an incredible 2000-lumen maximum beam that reaches up to 134 meters with 3xSAMSUNG LEDs. Another LEDs version is 3xNichia 219C, which is high CRI (CRI≥90) to resemble the nature of sunlight and reveals subtle detail of an object. Powered by one 1100mAh 18350 rechargeable Li-ion battery, which can be recharged through a built-in Micro-USB port, so no external charger is needed to charge the battery. Its surprisingly long run time up to 200hours at lower settings and fantastic value for camping, hiking, or running.