The Primos 160 Imperial Plate is a premium double reed diaphragm call specifically designed for elk hunting featuring waterproof construction and authentic raspy cow/bull herd sounds.Primos 160 Imperial Plate Diaphragm CallDouble reed latex construction for realistic elk vocalizationsWaterproof design for all-weather hunting conditionsHands-free mouth call operationProduces raspy cow and bull herd soundsDurable red latex materialNo batteries or electronics requiredPerfect for elk hunters seeking authentic vocalizations to attract game this mouth call provides hands-free operation allowing for weapon readiness while calling.