Only 25 produced. This year's model has Snakewood for the lid, apple on the right side, holly on the left side and crotch walnut for the bottom of the call.
The apple gives a higher pitched yelp/cluck and the holly produces a raspier sound. The crotch walnut is much like you'd expect to see on expensive shotguns or rifles with a lot of figure.
The snakewood is figured with the "snakeskin" look and works extremely well on both sides.