●EASY TO USE - Simple push button with distinct clicking sound. ●Comes with an elastic wrist band so you can leave it on your wrist or clip it to the leash or your pants. ●Not only train the dog but also the cat, bird, chicken, sheep a new behaviors like sit, fetch, roll over, lie down. ●For effective pet training ALWAYS reward with a treat after clicking. ●Can be used to train the dog basic obedience, small trick, and correct the bad behavior; Scientific method of training your pet safely and easily.