I am not sure of the model number but do recall they were a basic electronic digital call sold under the Burnham Bros brand. They worked very well, we killed a lot of coyotes in a couple of hunting days. Closest I had was a dog at about a dozen feet, he was racing in to the call but he made eye contact and hit the cactus before I could move the rifle. This was a lot of fun, the electric callers worked very well. They also distracted the coyotes by hanging a big feather on a length of thread attached to a piece of stick or old arrow shaft. Wind would move it continuously which was good.
Good luck with your coyote hunting!