The Zink Calls Nothing But Green Polycarbonate Duck Call is designed specifically for mallard hunters. This mallard call features an "easy blow" sound system that allows even beginner callers to produce lifelike sounds. A Z-cut tone channel prevents reed lock, ensuring a clear, realistic sound no matter the conditions. Plus, each Nothing But Green call is hand-tuned to guarantee performance. Designed to imitate the sound of multiple mallard hens, the Zink Nothing But Green Polycarb Duck Call is built for serious mallard hunters and will attract more ducks to your spread this season.