The Hitman was a long lived model from Yoyojam, the first signature model of Johnnie Del Valle. They produced these for 10 years. But they evolved over the years.
This one has adjustable string gap, Half Spec C bearing axle, hybrid body, double yo-ring response, and optimized weight rings on the outer rims for maximum spin. I think this one was released about 2006 to 2007.
Double yo-ring response consists of o-rings on each half. Yes those are really o-rings. With the adjustable gap, you can set the "sweet spot" where you like it. Very nice player.
Pictured here is the Baby Blue Edition, with special side caps. The body is a sort of swirled baby blue.