Review on COSOOS 2 Rechargeable Headlamps: 500 Lumen Bright LED Flashlights for Camping, Running, Hiking & More! by Billy Stull

Maybe the rear red light is flashing, but I suspect most people buy them to have some light to work with and the front/white light flashing strikes me as odd. And I had to fix (re-solder) one of my headlamps after only a few uses, but then again, it wasn't hard to figure out what happened and how to fix it. The front light is bright and diffused, illuminating almost your entire work/walk/active area. The battery doesn't last a full work shift, but it does last a couple of hours. good for money