I ordered this thinking it was a training collar, my cat attacks the other cats and does not respond to a water bottle, ect... I thought it was a remote controlled collar, something to stop her from attacking. This collar is an "anti-meow" collar. It only works when the cat makes noise, to train her not to meow. I've never heard of such a thing and definitely don't need an "anti-meow" collar (maybe some ppl do?). I waited too long to return it, so Im stuck with it. Otherwise it seems well built, a little big for a cat but do-able, Im not sure how the collar works exactly so I dont know if it would be effective for its real purpose. Just make sure to read *everything* before you buy (and even then I didnt get it, very confusing).