Manual-winding
Caliber 9S64
Caliber 9S64, a manual winding mechanical movement that achieves a stable level of precision during actual use and a long power reserve of approximately three days when fully wound.
Specifications
| Winding mechanism | Manual winding mechanical |
|---|---|
| Mean daily rate*1 | +5 to -3 seconds per day |
| Normal usage accuracy | +10 to -1 seconds per day |
| Power reserve | Approximately 72 hours |
| Vibrations | 28,800 vibrations per hour (8 beats per second) |
| Number of jewels | 24 jewels |
- Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.
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.
