Review on Nathan StrobeLight for Running: The Essential LED Clip-on Safety Light for Night Runs, Winter Adventures, Hiking, and Walking by James Duffield

Bright and high quality. Over the years someone at Nathan has made it difficult to turn them on and off. This latest version requires you to hold the button for 5 seconds before it turns on or off. The previous version was a little less time. And the version before that just clicked and it turned on. Also, flash speed/template is slower in this version. I really like the hyper flash that you got with the other versions. Btw I still have all three versions so they go with a stand that attaches to the boots and walks through the puddles.