Delivering championship-quality elk sound, the Phelps Game Calls Maverick Signature Amp Mouth Elk Call helps elk hunters deliver authentic bugles and realistic cow calls. A comfortable, easy-to-use mouth call designed to meet the demands of World Elk Calling Champion Dirk Durham, the Maverick Signature features a unique construction for long calling life. The calls' latex reed is optimally stretched to allow the call to settle in and sound better, even through loud bugles, for the longest possible duration. Built to exact specifications and standards to ensure lasting reliability.Manufacturer model #: PHEKAMPMVOS. Proven mouth call with championship-quality elk sound Delivers authentic bugles and realistic cow calls Designed to meet the demands of World Elk Calling Champion Dirk Durham Unique construction for long calling life - optimal reed stretch Built to exact specifications and standards