The EX3 Goose Call was designed to perform. Its starts with a first of its kind inside bore design. The "Funnel Channel" mouth piece maximizes air flow directly to the reed for extra fast response. The "Compression Chamber" insert allows the air to be compressed down to create extra snap, power, and volume. The call is tuned with the "Phantom" guts system to ensure realism. The Phantom guts system has a unique air flow tone channel, its "V" off front allows for air to flow directly to the reed, and the wedge is bored out to increase reed vibration. The EX3 also comes with the grip contour for perfect hand placement. All calls are tuned by 3 Time World Live Goose Calling Champion Scott Threinen to ensure top level performance in the field, and on stage. It's a combination of power, speed and realism...The EX3, for those who want to Hunt Alive!Specifications and Features:DESIGNED BY SCOTT THREINEN WORLD LIVE GOOSE CALLING CHAMPIONCOLOR Glacier WhiteALL ACRYLIC GOOSE CALLMG507 Model: EX3Country//Region of Manufacture: United StatesUPC: 707541583497