The mega amp will give you the hunting edge without breaking the bank.Each of the 20 calls are the essential calls every hunter needs to bring the game in closer locator: 1 adult coyote locator howl; 2 female howl; 3.Mouse squeaks; 4.Baby pig distress; 5.General howls; 6.Coyote pups yipping; 7.Alpha challenge; 8.Rat squeal; 9.Small rodent distress; 10.Wounded coyote; 11.Hog distress; 12.Territorial beta male; 13.Crow baby distress; 14.Adult cat distress; 15.Cottontail distress; 16.Fawn distress; 17.Coyote food fight; 18.Fleming hare distress; 19.Grey fox pups whining and yipping; 20.Jackrabbit young distress.Operates on four aa batteries.Includes belt clip.Calls: PredatorSpecies: PredatorMaterial: PolymerSound Species: MultipleElectronic: YesBattery: AAColor: BrownStyle: Electronic AmplifierProofs: Weather ResistantDifficulty Level: EasyPreset Features: YesHands Free: NoSounds: 20 Pre-Loaded