The Challenger is designed to trick territorial and mature coyotes. With the 6 acrylic barrel this howler is super loud and the tone board giving it great sound. The open-reed is versatile enough to make distress sounds giving more realistic sounds to your hunt. All combined with the easy to use open-reed system makes this call the complete coyote howler. - 6 barrel length for extreme volume - Open reed system for effortless use - Very versatile allowing for different sounds - Sleek design to fit comfortably in your hand