Grand Seiko · 9R Spring Drive
9R65
A foundational automatic Spring Drive calibre with date and power-reserve display.
At a glance
- Type
- Spring Drive
- Display / complication
- Date
- Architecture
- Mainspring energy, quartz-referenced regulation, Magic Lever
- Timebase
- Quartz-regulated glide
- Power reserve
- Approx. 72 h
- Jewels
- 30
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 SBGA211 Snowflake
An example from the linked references. Check the exact model and production generation.
What distinguishes it
Look beyond the reference.
The mainspring supplies energy while an electronic regulator controls the glide wheel. This produces the continuous seconds motion associated with Spring Drive, without a conventional balance and escapement.
For the enthusiast
Compare its three-day reserve with the five-day 9RA2 already in the library. Spring Drive’s quartz reference should not be converted into a mechanical beat-rate figure.