Go to Cabellas They have the best training collars available. And some work for up to 1 mile or more. My old Lab was a stubborn bitch and she would wander off all the damn time. I got this one for her. I use it on my other dogs now that she is gone but its never failed me. If it worked on my dog Kujo this will work on any dog
http://www.cabelas.com/product/Hunti...3Bcat104314680