Review on Hands-Free Rechargeable Hat Light: Ultra-Bright Cree LED Clip-On For Fishing, Camping, And Baseball Caps by Scott Gendron

Great little set of flashlights. Don't let the lightweight cheap feeling design fool you, they are strong and last a long time. My wife and I used them for a Ragnar 24 hr trail race and the night training runs. During the race we each had 2 night time runs that lasted over an hour. We ended up using the same light for 2 back to back segments (3 hrs of non-stop night running). A single charge lasted the entire time and then for a while after the runs back at camp.it might have lasted longer but the sun came up and I didn't run it to empty.Fit/stability - I clipped the light to the bill of my running hat and it held tight and didn't budge. I clipped it to the top of the bill and it worked great, I didn't notice it was there. (I tried it on the bottom of the bill, but it didn't feel right and was distracting)Great lights that exceeded my expectations.