The Up ROAR truly is a Triple Threat . It combines 3 of the most effective calls to bring deer in close. It has 2 chambers, an Aggressive Grunt and an Estrus Bleat, topped off with a Wheeze tube to challenge bucks to a fight. The Grunt chamber reproduces a deep, resonating aggressive grunt that is made by bucks during the rut. The Bleat chamber reproduces a loud Estrus Bleat made by receptive does. When using these calls in combination you can sound like a buck chasing a hot doe. This will make other bucks jealous and come running to see what s causing the Up ROAR.