really useless, it's hard to connect to the smartphone, which I thought was left permanently connected and easily, you have to search it is very heavy. this is not a gps case then what interest? interest only when it works is to ring its key when attached to keys. Even after leaving home, he always locates me home once arrived at work and even if I leave the box away from my smartphone because the principle is that it uses the last known location (the phone) if it is never far from the phone ... So, put it around your dog, what's the point? because the dog will move and you will know just the place from which you have lost; go your way not exceed 30 in a vacuum
