I have one dog that loves to go for walks...without me. He is good for a hike and I want to make sure he comes back like he is supposed to and with this collar, anyone that finds him will know to call me to come get him. So far that hasn't been the case, but you never know when he will decide to chase cows to someone's home and forget how to come back. The collar seems well made and I hope to get a long life out of it