What does this item do?

So if you play pokemon go on your phone this will assist in that. Once you sync it to your phone inside the pokemon go app it will do a few things. It will vibrate and blink colors based off a few things. If a pokemon is near you it will go off and if you click the little button it will try once to use a pokeball to catch that pokemon. If you catch it you keep it and if it doesn't it will automatically run away after the first attempt. It will only use pokeballs and none of the other types. If you are out it will still go off but when you click the button nothing happens and it will go off again cause the same pomemon is still there. It will also go off if your near a pokestop. Just click and it will automatically collect the pokestop. It will register your walking needed for hatching eggs also while it is synced. In the options you can turn off catching pokemon or pokestops or both if you want. So if you walking around say shopping and you don't want to be looking at your phone the whole time then you just use this and put your phone in your pocket. As long as the app is running on the phone even if the screen is off then you can sync the pokemon go device and still get stuff.