The new limited edition will offer a higher precision of +/- 5 seconds a year, and comes with a metallic charcoal dial features a unique pattern based on the traditional Quartz symbol to commemorate the 25th anniversary of Caliber 9F. On the SGBN001, the limited edition number is engraved on the solid case back. Caliber 9F86 is presented in one limited edition and two other permanent creations in the Grand Seiko Sport Collection. Like the other hands, the GMT hand is mounted on an independent axis so as to ensure its smooth operation. This is made possible by new components that have been created especially for this movement.ĭespite the addition of the GMT hand, the depth of the case has been increased only slightly, because of a newly designed main plate, a re-design of the gear train and the way the hands are attached, a process that is done by hand. The new Caliber 9F86 is based upon, and has all the precision and durability attributes of, the original 9F but incorporates a GMT function that allows the watch’s precision to be maintained when the hour hand is adjusted independently. The new GMT feature makes it an easy decision for the international traveler. And now extended further with the addition of a GMT feature to the venerable 9F.Īs with the regular 9F, the new caliber, dubbed the 9F86 is equipped with a backlash auto-adjust mechanism to eliminate any shudder in the seconds hand, the date changes in the blink of an eye, a twin-pulse control system allows the minute and seconds hands to extend right to the edge of the dial and high precision is ensured by the use of aged and individually selected quartz crystals. The quartz range was extended this Baselworld 2018 with the new 25th Anniversary Editions.

We reviewed the Grand Seiko SBGX069 earlier. The 9F is a workhorse quartz movement in Seiko’s stable, and have been in service since 1993.

The new Grand Seiko Caliber 8F86 incorporating a GMT feature.

Seiko 9f accurate 5 seconds oer year