Looking for Robb Report UK? Click here to visit our UK site.

Grand Seiko’s Caliber 9F Gets an Anniversary Makeover

The Japanese watchmaker’s cult-classic caliber has been updated with a GMT movement.

Grand Seiko 9F Quartz GMT Caliber Photo: Courtesy of Grand Seiko

Touted as “the highest-performance quartz watch in the world,” Grand Seiko’s Caliber 9F was critically acclaimed when it was introduced in 1993 and has remained a cult favorite over the past quarter-century. That, of course, is both for its less-is-more elegance and its ultra-precision (just +5 to -5 seconds per year).

Now, the Japanese watchmaker has upped the ante with the first-ever Grand Seiko 9F quartz GMT caliber, aimed at travelers in search of a reliable, super-accurate timepiece for life on the road.

Grand Seiko 9F Quartz GMT Caliber

The 9F 25th Anniversary SGBN001  Photo: Courtesy of Grand Seiko

The product of a subtle redesign that includes a new main plate, gear train, and process for attaching the hands, the GMT—housed in a 39 mm stainless-steel case and bracelet—bears the same simplified aesthetic and functionality as its predecessor. The minute and seconds hands extend to the edge of the dial, there’s a backlash auto-adjust mechanism that eliminates any shudder in the seconds hand, and there’s a super-swift date change. And it does it all with high precision, thanks to the use of aged and individually selected quartz crystals.

Grand Seiko 9F Quartz GMT Caliber

The SBGN003  Photo: Courtesy of Grand Seiko

Unlike the white-dial original, however, the GMT is distinguished by a metallic charcoal dial imprinted with a pattern resembling Grand Seiko’s traditional quartz symbol to commemorate the Caliber 9F’s 25th anniversary. A vivid yellow band decorates the outer rim of the dial, from three o’clock to nine o’clock, to make clear whether the GMT hand indicates a.m. or p.m. And at the six o’clock position, a five-pointed gold star symbolizes Grand Seiko’s “Special” level accuracy.

Grand Seiko 9F Quartz GMT Caliber

The SBGN005  Photo: Courtesy of Grand Seiko


Offered in a limited edition of 800 pieces, the 9F 25th Anniversary SGBN001 retails for $3,500 and will be available in October.

But that’s not all. In January, Grand Seiko is bringing out two new GMT production models belonging to its Grand Seiko Sport Collection: the SBGN003, with its black dial and red GMT hand, and the SBGN005, with its blue dial and red GMT hand, each retailing for $3,200. They both feature the same 9F86 in-house quartz caliber as the limited edition.


More Watch Collector