Allows you to reproduce the packs language to one another, by implementing cows, calves, spikes, satellite bulls, mature bull growls, bugles and chuckles, as well as Estrus(TM) cow cries. Becoming the ultmate collection of Elk sounds that will bring the whole heard. A great value Includes: See Thru(TM) Mouth Call Case Mini Sonic DomeA(R) Double Sonic DomeA(R) Single Sonic DomeA(R) Triple Allows you to reproduce every distinct sound that elk, make; cows, calves, spikes, satellite bulls, mature bull growls, bugles and chuckles, as well as Estrus(TM) cows make