Similar in concept to the Seiko Kinetic technology. Mechanically nothing different but the design in refreshing. I like the way they put the rotating mass or Micro-Generator-System as they call it at the top of the watch so that you can see it operating. Below is an explanation of the technology.
The movements of the wrist activate a rotary mass which relays the momentum to a micro-generator; the electric energy gained in the process continuously feeds an optoelectronic time-module. The Micro-Generator-System of the new SPARC MGS was developed to achieve maximum performance. Placing the MGS side-by-side next to the time-device enabled a larger and heavier oscillating mass. This array also permits the viewing of the mechanism from the top, giving the SPARC MGS its characteristic appearance. The miniature power-station sustains a state-of-the-art micro-processor and a 250-segments 12-digit liquid-crystal display. The latest operating system EasySkroll v.2.0 allows later upgrades, another first in wristwatches. The multiple functions of the SPARC MGS are intuitively operated by a single scroller.