Quite a bit of light comes from Sigma's small and powerful Karma Evo. This little light illuminates up to 260 feet ahead, with up to 320 lumens of brightness from its high-power LED. The included lithium-ion rechargeable battery delivers up to 12 hours of run time. With that much run time, its easy to appreciate the low weight (70 grams) and small size that makes it easily portable. Plus, you can move the light quickly thanks to the sliding mechanism that allows it to be removed and inserted into different mounting brackets in seconds (helmet mounting bracket included). And, of course, the Karma Evo is installed without tools!