Bought this for ultrarunning with plan to fasten to my hydration pack (headlamps don't work well for me). The lights are very lightweight and the included velcro straps allow multiple attachment options. Worked great with my backup phone powerbank made by a different manufacturer and the lights on the low setting were more than enough in the 4am darkness of a training run to light up the area about 20 feet ahead and to the sides. Will be purchasing one of nitecore waterproof power banks for my races since you never know when a surprise storm might pop up.





