The Double Barrel Deer call is designed so you only need to carry one call with two different type sounds while hunting Deer. This call is designed to reproduce all the different grunts of the whitetail buck or doe on one side and all the different bleats and blats of the whitetail doe & fawn on the other mouthpiece. The versatility of this call allows you to use bleat and blat calling techniques on the grunt side of the call as well. So, when using the grunt side of the call, bleats and blats can be utilized in conjunction with grunts to create the sounds of a buck, doe, or fawn.