I bought the item to attach to my Yukon nite scope in order to listen for coyote movement. It allows me to hear them about 100 yards away from my stand. Coupled with the nite scope I have been able to eleminate five of the animals.
Pros: It does what it is supposed to do.
Cons: It is a little to long .
This review was written in the old system and had content requirements that are different than reviews written today.