What a nightmare! The product captures some violent movements of the animal, either barking or anything else. Result: he scratches, it beeps, it jumps to play, it rebipe, it barks, it will not beep! Fortunately we waited to start electroshock which, moreover, are powerful enough because I inadvertently took a dump by checking the device. I weigh 6 times more than my dog and I was very shocked. Important Note: This product is banned in a lot of other European countries. I highly recommend to anyone to deal with the kind dog. Better to live SPA.