The slide bugle allows for easy control with minimal air to produce high-pitched bugles.Minimal air is needed to produce growls and high-pitched bugles.Simply apply more pressure with lip to increase pitch.For cow and calf sounds, remove the mouthpiece from the bugle hose.Diaphragms can be interchanged to produce bull, cow and calf sounds.Sliding tray holds and protects diaphragm.Includes mouthpiece with protective slide plate, two elk diaphragms and lanyard.Species: ElkSound Species: Bull/Calf/CowColor: CamoSounds: Growls/Chuckles