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Caliber 9S64

9S MECHANICAL MOVEMENT

AUTOMATIC 3-DAY POWER RESERVE

Caliber 9S64

The successor movement to the caliber 9S54, the caliber 9S64, has improved in duration from about 50 hours to about 72 hours (about 3 days), and the torque gradually decreases, making it more stable. You can now achieve accuracy.

By integrating the train wheel receiver and covering the movement, it is finished in a beautiful appearance with a sense of stability and unity unique to a hand-wound movement.

SPECIFICATIONS
Driving system
Manual winding mechanism
Accuracy
(when static)
+5 to -3 seconds per day

Note: This accuracy is the result of measuring the loss/gain of the time for seventeen days before the inside movements of the watch are put in the case. The measurement has been done in the factory where temperatures or position of the movements are controlled.

Normal usage accuracy
+10 to -1 seconds per day
Power reserve
Approximately 72 hours
Vibrations
28,800 vibrations per hour (8 beats per second)
Jewels
24 jewels

What makes 9S Mechanical special?

The concept of Grand Seiko was born from the desire to build the world's best watch, and the collection continues to push precision in mechanical watches to the limits of timekeeping technology.
As a true manufacture, Grand Seiko incorporates the latest technology alongside its breadth of craftsmanship to raise the art of watchmaking to its peak.

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