I bought an add on collar and it works great. Good company to work with.

I was hesitant to use an ecollar product on my dogs. However, the change in obedience and behavior is amazing. I have rarely had to use negative stimulation. I followed the steps in the training guide and the dogs done great. I am now the alpha of the peach and have earned their respect without losing their love.

With the slightest click my dog realizes he needs to pay attention and comes running to me. A treat to say Good Boy is appreciated! An excellent humane collar that keeps your pet safe.

We bought this about a month ago as an add-a-dog when we got a new puppy. Our previous collar on our older dog needed to be on 5 or 6 to get him to stop chasing cats. The stubborn field trainer (425XS only needs to be on 1 or 2 and he is racing back across the field to me.

Easy to set up as an add-a-dog, and I'm sure it works great as a stand alone too.

Highly recommended. I like it better than our original one (425).

Very very waterproof as long as the charging port is well sealed. Our dogs spent their whole weekend in the lake chasing ducks and the collars held up amazing. We love SportDog products!