Grand Seiko Introduces the Spring Drive 5 Days Caliber 9RA2
Having introduced a new design language along with the all-new, automatic 9SA5 last year, Grand Seiko is now doing the same for the Spring Drive. The watchmaker has debuted a pair of Heritage Collection Seiko 140th Anniversary Limited Editions, the “Minamo” SLGA007 in steel and the “Tree Rings” SLGA008 in rose gold. Both are powered by the 9RA2 that’s part of the family of latest-generation Spring Drive movements first seen last year in the Grand Seiko Diver 600 m SLGA001. Just 5 mm high, the slimness of the 9RA5 means the pair of new models are the thinnest Grand Seiko Spring Drive watches to date. Initial thoughts The new models are essentially Spring Drive versions of the self-winding Heritage models launched last year (including an ultra-luxe platinum version and the more recent “White Birch”). That’s a good thing for two reasons. One is the intrinsic appeal of the design, which is vintage inspired and appealing, packaged in a case that’s a good size and easily wearable. And the other is the increased consistency in styling between Grand Seiko’s Spring Drive and automatic models, doing away with the confusing distinction between movements and designs. The “Minamo” SLGA007 in steel But that’s also the downside for the buyers of the limited-edition models (either these or the automatics), since the design has been replicated as a standard-production watch with the automatic movement, and the same will surely be done for the new 9RA2 Spring Dr...
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