The SportDOG Collar is great! I've been using it now for about four months. The Remote battery lasts a lifetime. (Close to it). I've charged once in a couple of months. The collar does it's job and the battery life is amazing on it as well. The collar is large enough for my dog with plenty of room to adjust as he is only a pup with room to grow still. He's 70lbs at the moment. Thank you SportDOG for the awesome collar!