The Illusion Game Calls Extinguisher Deer Call System is an all-in-one deer calling system. Easily go from fawn, to doe, to a mature buck all by sliding your finger. The Extinguisher utilizes technology like a dual layered throat tube design, Freeze-Free design for cold temperatures and an easy to use sliding chamber to change your call instantly.Specifications and Features:Easily go from fawn, to doe, to a mature buck all by sliding your fingerDual layered throat tube designFreeze-free design