Every detail is fashioned to enhance the legibility of the time and the precision that Caliber 9F86 delivers. The two-tone dial ring allows the night and day hours indicated by the gold color GMT hand to be read instantly. This new creation is offered as a limited edition of 2,021, marking the 140th anniversary of Seiko's founding.
The caseback of the limited edition carries a lion emblem in 18k yellow gold and the watch's individual serial number.
Caliber 9F86
When Caliber 9F was created in 1993, the goal was straightforward but ambitious. As the quartz caliber for Grand Seiko, it should set new durability and precision standards and allow all the aesthetics of Grand Seiko to be fully expressed. A backlash auto-adjust mechanism eliminates 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. The use of aged and individually selected quartz crystals as well as the temperature control system by IC ensure high precision of -10 to +10 seconds per year. Thanks to these unique characteristics, Caliber 9F can lay a strong claim to be the world's highest performance quartz watch. Caliber 9F86 was created in 2018 and offers a GMT function in addition to the base characteristics of Caliber 9F.
