Only the best will do for the 25th anniversary of the Grand Seiko caliber 9F family of luxury quartz movements. For 2018, Grand Seiko offers the Grand Seiko GMT SBGC007, a green dial limited edition for the Japanese domestic market and greater Asia watch buyers. This exclusive Grand Seiko sports watch is a 1,200 piece limited edition for the Grand Seiko collector who has everything.

This Grand Seiko GMT SBGN007 features the first ever Grand Seiko caliber 9F quartz GMT movement. The caliber has been equipped with a special grade of hand-selected quartz crystal that improves the usually unerring caliber 9F quartz (+/- 10 seconds per year) to downright uncanny at a guaranteed accuracy of +/- 5 seconds per year.

Additional premium features of the 9F anniversary caliber 9F86 quartz GMT movement include thermocompensation and a manual trimmer feature; both are true horological refinements generally reserved for the finest of quartz chronometers like the Rolex caliber 5035 and 5055 Qysterquartz; these features are Grand Seiko's commitment to delivering a flawless watch designed for a lifetime of performance.

The GMT watch capability allows this Grand Seiko GMT 9F anniversary to keep track of two independent time zones: one in 24 hour format and a second in 12 hour format. Two Grand Seiko watchmakers assemble and adjust this movement; one tunes the caliber itself, and the second calibrates the precise jump date mechanism.

With a 40mm stainless steel case finished with Grand Seiko's hand finished Zaratsu mirrored surfacing, the GMT Sport Collection's flagship is a masterpiece inside and out. This exclusive Asian market limited edition includes a special green dial that sets it apart from the other three 9F 25th anniversary Grand Seiko commemorative models. Moreover, this dial features a discreet internal 24-hour track that allows the bezel to be thinner and finer than on the Grand Seiko SBGN001, Grand Seiko GMT SBGN003, and Grand Seiko GMT Sport Collection SBGN005

The Grand Seiko Sport Collection GMT 9F 25th Anniversary Limited Edition is encased in 40mm of stainless steel surrounding a green dial on a steel bracelet. Functions include hours, minutes, seconds, date, and GMT. The watch also measures 12.3mm in thickness and 46.6mm from lug-to-lug.

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