The Ultimate Predator I was specifically designed to lure the wariest of all predatory animals, bobcats and coyotes. The call features a unique sound unlike any other in the predator hunter"s arsenal. The new barrel design has an ergonomic look and feel. The Threadlock barrel threads into the shortened end piece for ease of disassembly. The wedge, reed and sound board are also changed, so the reed "locks" into place. This allows the call to be reassembled just as it came from the factory- every time. The end result is a great sounding, user friendly, compact call, with a lot of volume.