Grand Seiko · 9F quartz
9F62
A high-accuracy quartz calibre with an instantaneous date and carefully controlled seconds-hand motion.
At a glance
- Type
- Quartz
- Display / complication
- Date
- Architecture
- Twin Pulse Control Motor, backlash adjustment
- Timebase
- Quartz regulated
- Battery life
- Approx. 3 years
Reference sources reviewed 7 November 2026. Published specifications, not independent measurements. Versions and complete-watch specifications can differ; fields without a verified figure are omitted or identified.
Find it in a watch
Grand Seiko SBGX261
An example from the linked references. Check the exact model and production generation.
What distinguishes it
Look beyond the reference.
The motor delivers the torque needed for substantial hands, while the backlash mechanism reduces seconds-hand shudder. These are tangible engineering features beyond the fact that the movement uses quartz.
For the enthusiast
Grand Seiko specifies ±10 seconds per year for this reference. That annual figure is different from the monthly tolerances often quoted for ordinary quartz; battery life is approximately three years.