A Caliber Featuring a Time Difference Adjustment Feature
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.
|±10 seconds per year
|Approximately 3 years
|-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.
Caliber 9F85 Models
9F Quartz Movement
The three movements at the heart of Grand Seiko
One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Seiko's expert watchmakers.
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.