From Pico Brothers:
5 Perfect Goose Calls and calling instructions in your pocket always with you. Designed with hunters in mind. Play, Pause, Stop or Change calls on the run from Big and clear buttons. Included are all the basic calls that let you call in geese in virtually any situation. The included instructions teaches you basing calling techniques and when and where to use which call. If you intend to use the calls for hunting, check first your local game laws for legal use. The calls are very good to keep with as reference when you tune in your own calls. INCLUDED CALLS: Hail Call. Greeting Call. Feed Call. Comeback Call. Laydown Call. To extend the range, connect the iPhone to an external speaker. No need for internet for the app tor work. Made by Hunters for Hunters.