They have the same sounds as the bigger calls. I usually use a raspy cottontail unless someone wants different.
Here is what a couple of guys have to say:
Hey PW!
I received my call today, too! And like Jon, I am amazed just how small this call is.

Cutest darn thing I've seen in a while. (I got the red, white, and blue one in the quarter picture)
It didn't take me but a couple of minutes of playing with this call, to realize it is a valuable call for a very SPECIFIC use! This is a PERFECT hands free call!
Just a soft bite, I can easily hold this call in place, opposite side of mouth from my cheek on the gun stock.
For up close work when movement needs to be at a minimum, and both hands need to be on the gun, this little baby is the answer!
For everyone who gags on diaphragm calls, or is just not good with them….
Whether to coax, or stop a dog for a shot, especially for anyone who can't bark, or doen't like to use a bark on coyotes.
EVERYBODY should have one of these! Great Work, PW. THANKS!!


I love mine.. It's got a nice sound.
I pulled into work this morning and was listening to Talk radio and wanted to wait to hear a segment that was going to follow after a commerial break..
I saw the keychain call, its friday, so very few people are at work and we have an open desert area next to the parking lot.
I cracked the window a bit and let a couple of bunny blues cries off, and I was just sitting there playing with the call and looked up to see a coyote stairing at the truck from outside out the property 6' fence. (about 40yrds from my truck)
So, in short, the call worked well and called in this coyote in less than 2 minutes, to the parking lot at work.
( I have a 10/22 with subsonics in the truck, but decided it wasn't worth the risk, and I couldn't get the camera on my phone going before it decided to leave with all the car traffic coming in)