This is a lite version of the Wild Game Caller, this application is designed to work the same way a electric game caller works, Connect a amplified speaker 5 + watts for best results and even better use a Bluetooth speaker, in the lite version there is mallard duck, and red deer, there will be other calls added monthly, this lite version does not have all the features of the full version, the full version will cover most of the game animals world wide and you get to pick or purchase different types of consoles to suit your style and purchase other game calls, have the call meanings and additional features. simple to use hang your speakers of your back pack and connect to your iPhone or iPod touch and call your favourite game animal. Turkey Mallard Duck Pheasant Whitetail Deer Red Deer Elk Deer