"The range is a 90' radius circle adjustable down to almost nothing. If you have a very big yard and want to give your dogs more room, that is the ONLY reason to not get this. Setup can't be easier. Plug it in, done. Adjust the range if necessary. Two very nice features with regard to the collars. First, the level of correction is adjustable, so your dog won't get too strong of a correction if it isn't needed.
Second, and this might be the most important, unlike the buried wire invisible fence whereby the collar only corrects when the dog is near the buried wire, this system adds a correction when your dog gets OUT OF RANGE of the transmitter. So your dog will continue to get the correction until it gets back into range. With the buried models the dog could run through the fence, get a quick correction but keep going and not ever get another correction until it gets close again. Your dog will absolutely NOT run off if the correction is persistent like with this product.
One minor complaint is the proprietary batteries that you have to get from the pet store, and the battery life. I seem to be getting about 3 months out of a battery, and you have to order them or get them from the pet store. It would have been nicer if they used regular coin cell batteries that you can get anywhere. Don't let that dissuade you though, this is an awesome product. Plus, you can take it with you. We take it and put it in our camper and adjust the range down to about 15-20 feet, then bring it home, plug it back in and adjust it back to 90 feet. You can't go wrong with this product."
