We use to buy those lights that you can hang onto the collar but I found they died super fast and were not very bright. We took a chance on this light based on the reviews and I am so happy we did. It is super bright which makes me feel more comfortable and seen when walking during the winter and night. Highly recommend it. I use the clip on attachment and put it on the front of my dogs harness so that it shines on the ground that way you can see where our pup is at all times. I find cars see us and slow down for us to cross roads way before they use to with the dinky little clip on light we used to get.