I got the small one for my new puppy but will have to wait for her to get bigger before she can wear it. Very responsive seller and very good customer service.

the button is firm and easy to press on and off. I highly recommend this collar. It is very bright and I can see my dog anywhere on the two acres of land that he runs on.

easily recharged, easily adjustable, great selection of colors. recommend for large dogs

If your dog is dark in color, like brown or black, this is a must for the night time. It's easy to find my doggie in the dark.

As described and delivered in a timely manner. I like that there are 3 settings for the light (fast flash, slow flash, and steady on).