This digital, electronic game call system can be used as a wired unit or wireless remote system. The digital sounds, stored on a microchip, are the exact frequency levels at which wild animals vocalize and hear. Additional interchangeable sound cartridges (sold separately) engage a wide variety of game calls. The Phantom Predator features the following sounds: coyote howls, animal distress, crow gathering, thrashing leaves and more. Contact Extreme Dimension Wildlife Calls at: (888) 239-5133; www.phantomcalls.com. ($299.99)