The main stay of open area predator callers. Open reed freeze-proof design allows user to go from long distance to cottontail distress wails, to close in squeaks in seconds, by manipulating the open reed with your teeth. Creates great barks, yips and sub dominant howls. Resonates from several hundred yards to just a few feet. Compact open reed, Freeze proof, High volume long-range predator calling. Durable and weatherproof polyethylene material, Hand-tuned. Includes lanyard. Field proven.