All the Spring Drive movement is is a mechanical movement with a Quartz controlled electromagnetic brake in place of a mechanical escapement. Apart from the visual payoff of a stopless sweep hand, The movement itself has no real friction. That means potentially a much longer service interval. There are some other advantages, such as the 72 hour power reserve.
...The fit and finish of the watch rivals anything put out by Switzerland apart from the top three.
The design cues of Grand Seiko watches are typically Japanese. It's an acquired taste for some... Ultimately, it's a matter of taste, and the willingness to try something new. I for one am glad I did.
Awesome watch and great pic!
Here is the dragon of the GS Spring Drive line... next to some dragon fruit.
and its beautiful 50 jewel 72 hr power reserve caliber 9R86 Spring Drive movement...