Professional goose calls in a powerful yet simple to use App. Works in device silent mode and can be controlled by Apple Watch. For best results use an external bluetooth speaker. 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 Made by Hunters for Hunters