With the push of a button, the RubberNeck converts from a mature buck grunt to a young buck grunt or a doe Estrus Bleat. Many times when you think that a buck won’t respond to your grunt, it’s because he can’t hear you. for the ultimate tone and volume control…Converts from Mature Buck, to Young Buck, to Estrus Doe with the Push of a ButtonIncludes: Lanyard, Arm Strap