The most innovative feature of Pro-Series calls is the opportunity to buy just one call and then purchase additional Sound Modules for a variety of game. All Sound Modules boast 16 Bit sound resolution with twelve of the most effective sounds. You can purchase a complete Wireless System or the Pro-Series wired call can be upgraded to a wireless remote system by purchasing the Wireless Remote Upgrade Kit. Features: - For use with the phantom pro-series calls only - Sounds: Coyote howls, coyote pups, jack rabbit distress, fawn distress, baby pig distress, feline distress, rabbit distress, bird distress, rodent squeaks, crow gathering, thrashing leaves and ground hops