My call is like the one Bob is showing. you can bump it a few times or shake it, to get different sounds on your call. After you play with it a few times you'll get the gest of it. Squirrels are territorial and you get them madder than a wet hen, with one of these calls. They think your movin' in on there feeding zone. Its about as much fun raising there blood pressure , as it is shootin' the little tree rats.