Sunbeam Advanced Remote Trainer-Ultrasonic for Dogs

Pros:

Works like it should. I haven't used it past 100yds but it always works. You can even use the remote from inside your home and it will still transmit to the outside. Make sure you test it on yourself first so you know what to expect. I have never needed to go past medium and I have a very stubborn dog. If you use it like you are suppose to and you are very diligent with your training this is a great product.

Cons: the only reason I give it three stars is because the battery on the collar last about 2 3 weeks before it needs to be replaced. I don't remember seeing a warning that the batteries were low and one day when I tried to turn it on it was just dead.

I would recommend a collar that is rechargeable. I have a rechargeable e-collar for my bird dog and the collar is even waterproof. I spent about 10 more dollars for these features.