This call is built with the Jase Pro Series modified reed system. These reeds will harmonize with the air pressure like a single reed but has the toughness of a double reed. This call will do everything a Mallard hen does and will do everything a human thinks he should do on a duck call. Quack it, feed it or hail on it with equal enthusiasm.Specifications:Type: Duck CallMaterial: PlasticSound Species: DucksColor: YellowStyle: Double ReedCalls: DucksDifficulty Level: EasySounds: Mallard