Dog Collar Lights for Nighttime Clip on, 3 Modes Dog Light Rechargeable, 100% Waterproof Light for Dog Collar to See Dogs at Night. Pet Collr Accessories, Namely Safety Lights(Red).

I have fully charged this...but when I put it on my dog...it doesn't light up..no instructions at all..complete waste

a great product but the button is difficult to locate or feel when trying to turn it off. I'd still recommend. Update: the orginal & replacement lasted just about a month.

This is a nice little unit. The light is bright; the flash modes work well; it makes your dog very easily visible for quite a distance. If the person who needs to see your dog is on the correct side, that it.The problem with this is that it clips onto your dog's collar. Then, as you move around and change sides relative to your dog, your dog's collar shifts position . . . and so does this light. And the light is just plain invisible from the side that the light isn't on.So, if a car is coming from the other side of your dog, they'll see no light.If you were to get two of these, then you could put them 180 degrees from each other on your dog's collar, and you'd always see a light no matter what side you were on. Problem solved.They should offer these in a two-pack.

we have a very dark chocolate chihuahua and when we let him out at night he disappears into the darkness and now we can see exactly where he is. This light is perfect. It has 3 settings - fast blink, slow blink, or steady. it is rechargeable with a c-charger (YAY!) We are definitely getting another one for our other fur baby. We think she is jealous of his collar bling. lol