Comments: This is for safety, not sight. It provides only a small amount of light, so unless you are running on roads with some other lighting around, go for something else.
However, I actually LOVE this light for running trails at night with my dog. I clip it to his harness (Ruffwear) and if he decides to go sniff a bush or something, I can easily find him. It works great for that purpose
From: Dave, Seattle
Comments: Doesn't provide much light but it's better than nothing I guess. I clipped it to my shoe (may want to get one for each shoe?) I tripped on something during my run and the clip on the back came off & I never did find it so I can't wear it again. Oh well, it wasn't that great anyway. You're better off carrying a flashlight (to see where you're going) and wearing an illuminated vest (so that others see you.)
From: Lisa, Chicago, IL, USA