Seiko 9SC5 Movement Details
Seiko caliber 9SC5 is a high grade automatic (with hand winding) watch movement. Production started around 2023.
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| Sub-brands: | Grand Seiko |
| Power reserve: | 72 hours |
| Accuracy: | +5/-3 seconds/day (Seiko "AA" standard) |
| Day / date? | Date only |
| GMT / world time? | No |
| Chronograph? | Yes |
| Rate: | 36,000 bph |
| Number of jewels: | 60 |
| Development division: | Shizukuishi Studio (Iwate Prefecture, Japan) |
| Notes: | Officially named "Tentagraph", this is Grand Seiko's first mechanical chronograph. It features the twin barrel cal. 9SA5 as its base. This movement has a "dual impulse" escapement which efficiently transfers energy to the balance wheel both indirectly through the pallet fork and directly from the escape wheel. The chronograph function uses a vertical clutch and column wheel for high accuracy. |
| Related movements: | 9SA5 |