Automatic 3-Day Power Reserve
Caliber 9S65
Caliber 9S65 is the most standard automatic movement that typifies the 9S mechanical series. The old and new movements may appear to have a similar design, but they are utterly different in terms of performance.
Grand Seiko has not only revised the materials used to make this movement, but also applied MEMS (Micro Electro Mechanical System) technology, which utilizes semi-conductor manufacturing technology, to the production of the watch parts. Grand Seiko has significantly enhanced the basic performance of this timepiece, and has also redesigned the way in which the oscillating weight winds the mainspring.
The winding system of its predecessor, Caliber 9S55, used Grand Seiko's Magic Lever mechanism. By contrast, Caliber 9S65 uses reverser gear train system. Hardening the components has helped improve the durability of the reverser system, which had been a weakness.
Specifications
| Winding mechanism | Automatic with manual winding mechanism |
|---|---|
| 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 | 35 jewels |
| Features | -Date display |
- 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.
