... . It's a Beeper for Hunting dog's.The hunter put it,on the dog's neck,like a collar.Then, ... when the dog is moving fast,the beeper makes ... a slow motion "BIB".And when the dog is moving slow or no move,which means that have ... the "Bird", the "BIB" becomes very quick. Pet collar,Hunting Dog ,game caller,Dog training,with CE/FCC/ROHS.