Well folks, remember it is a Grand Seiko and the movement is one of their highest grade Quartz movements. Brought to you from the company that introduced the world to Quartz!
The article linked to goes over more details about the movement and the GS its in. I thought that it was interesting for the reasons you guys have pointed out - high precision in its manufacture, attention to detail, and we see so many cheap quartz that are "floating" inside the case.