Grand Seiko Introduces the Spring Drive SLGA009 “White Birch”
Though it was two years ago as the Grand Seiko’s flagship Spring Drive movement, the 9RA5 still feels new, simply because the latest-generation movement hasn’t found its way into many watches, save for a pair of limited editions. Now it finally makes it into a regular-production model, the Grand Seiko Spring Drive SLGA009 “White Birch”. The latest Spring Drive, like the mechanical SLGH005, is inspired by the tree of the same name that’s native to the area around Grand Seiko Studio Shizukuishi. Initial thoughts The SLGH009 “White Birch” clearly becomes the Grand Seiko’s showcase Spring Drive – it resembles the previous generation’s bestseller, the famous “Snowflake”, but is substantially upgraded in terms of features and finish. The combination of familiar styling and improved quality makes it attractive. Part of the appeal lies in the 9RA5 movement, which on the surface seems like a mere upgrade over the predecessor 9R65. But it is more than just the power reserve being increased to five days, and the new calibre boasts an entirely new architecture, including both a new gear train and integrated circuit for the Spring Drive regulator, as well as a better finishing. The other aspect of its appeal lies in the design, which has dubbed “Evolution 9”. As always is the case with Grand Seiko, Evolution 9 is inspired by vintage Grand Seiko models, but brings with it a sense of solidity and refinement, thanks to the flatter case, heftier bracelet, a...
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