Introducing The Grand Seiko Spring Drive 8 Day Power Reserve


And then you turn it over and the magic grows. This brand new, in-house caliber features an astonishing 198-hour power reserve, or in other words, eight days of power. It does so via three separate barrels that wind and expire linearly. A single expertly finished bridge ensures accurate positioning of each wheel in the gear train so that the transmission of power is most efficient. The rigidity of the single plates also helps against shocks to the watch. The plate is beveled at top to in fact outline Mt. Fuji, and the insanely high polished rubies and blued screws are meant to represent the lights of Suwa, the city just below the Micro Artist Studio.

This new eight-day caliber consists of 307 components, and is regulated to an accuracy of +.5 seconds per day. That is point five seconds, people. Power reserve is indicated on back, and the hour hand is independent adjustable. You have a boxed sapphire crystal on both sides of the Grand Seiko, and a 43 mm case that is 13.2 mm thick. Just eight pieces of the Grand Seiko 8 Day Power Reserve will be made, sold only via Seiko boutiques, and price will be $55,000-ish. More here.


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