A Caliber Featuring a Time Difference Adjustment Feature

Caliber 9F85

Caliber 9F85 has a time difference adjustment function that allows the hour hand to be adjusted without stopping the seconds hand and thus preserving its high precision when the wearer changes time zones.


Accuracy ±10 seconds per year
Battery life Approximately 3 years
Features -Instant date change mechanism
-Quick correction function of time difference adjusting to a calendar

What makes 9F Quartz special?

The quartz watch, redefined to the Grand Seiko Standard. To meet the high standards of Grand Seiko, the 9F quartz movement has enhanced precision and durability, made possible by innovations in every aspect of the movement. This might well be the most advanced quartz movement in the world.