The Fenix HL18R-T is a rechargeable headlamp that features the new patented SPORT headband fit system. With a simple click and twist you can easily adjust the fit with just one hand. Powered by the included rechargeable 1300mAh Li-polymer battery pack, the HL18R-T headlamp emits a maximum output of 500 lumens. Separate switches control three brightness levels of spotlight, one floodlight, and SOS. Easily switch out the battery pack for readily available AAA batteries if needed. IP66 rated rain/splashproof, with a 60° adjustable angle, and extremely light weight, the HL18R-T headlamp is the perfect fit for hikers and runners.