Precision and simplicity form the very essence of the ideal timepiece, allowing it to fulfill a lifetime of commitment to its wearer. 9F was the first quartz movement to achieve this fundamental ideal.
The Instant Date Change Mechanism changes the date display in 1/2000th of a second.
Torque comparable to that of a mechanical movement makes the iconic wide hands of Grand Seiko possible.
Improved second hand precision achieves greater positional accuracy on the dial against the markers.
The sealed structure improves retention of lubricating oils.
Caliber 9F redefines the quartz watch, delivering higher performance and greater durability. It is the quartz watch that merits the name Grand Seiko.