Totally useless. If you haven't already bought the tag then don't. I wasted 19.99 only to realize this only works off Bluetooth and poorly at that. Outside of ten to fifteen feet you can't find your animal. My dog isn't exactly a set of keys. If I'm within that distance then I'll know where he is. But even within that fifteen foot distance it'll tell me he's 70 feet away in the wrong direction, so make that make sense. Very disappointed. **** I use it outside. Way to make it like it's my fault.