Its a pretty safe assumption to say that the ZeroHour Battery Backup Flashlight ($130+) is the most functional flashlight on the market. Currently available for preorder following a successful Kickstarter campaign, the ZeroHour flashlight is crafted from water-resistant aircraft grade aluminum and features a 1,000-lumen CREE U3 LED bulb that provides impressive lighting for up to 90 hours along with a 10,000mAh power pack that can charge multiple devices at once via dual USB ports inside the cap.
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