This is a Signature Model from Hiroyuki Suzuki, the 2003 Japan National Champion. It features the response system that first appeared in the prototype Matrixx. One side of the yo-yo features an O-Ring, the other a Starburst. This was the first YoYoJam production model to included this response system. Take apart design, bearing axle, adjustable gap, and weight rings for long spins. And of course the well known composite plastic to metal weight ring body design.
Pictured here is the black release from March 2005. The logo was white and holographic, giving it a much different look than the previous months black with gold metallic logo.