I have purchased every light for dogs on this website now and this one is my favorite. I liked the lighted dog tag thats shaped like a heart and a bone but the back is hard to take off if you don't have the perfect size screw driver and the batteries died quickly. However this product I have been very pleased with so far. It is easy to turn on but not easy for my dog to accidently turn on. It is very bright and I can see my dogs at night just fine. I went for a walk early this morning and cars had no trouble seeing us. It is kind of expensive in my opinion but I have three dogs and it comes with three lights so it actually worked out well for me. I have probably spent $50 trying to find the perfect saftey light for my dogs and I think I have finally found one I am really satisfied with and Jeffers has always been great to order from.