AutomaticManufacture
9S65
Core Grand Seiko mechanical automatic calibre.
- Reserve
- 72 h
- Frequency
- 28,800 vph
- Jewels
- 35
Japan · Movement Manufacturer
Grand Seiko
Grand Seiko develops specialised mechanical, Spring Drive and quartz calibres with a focus on precision, durability and refined finishing.
6 calibres1960 foundedHigh-beat, Spring Drive and precision quartz
Selected Milestones
1960 — First Grand Seiko
1998 — 9S mechanical family
2004 — 9R Spring Drive family
2020 — 9SA5 and 9RA5
Calibre Library
Grand Seiko movements
Automatic high-beatManufacture
9S85
High-beat mechanical calibre.
- Reserve
- 55 h
- Frequency
- 36,000 vph
- Jewels
- 37
Automatic high-beatManufacture
9SA5
Dual Impulse Escapement high-beat movement.
- Reserve
- 80 h
- Frequency
- 36,000 vph
- Jewels
- 47
Spring DriveManufacture
9R65
Classic Spring Drive movement.
- Reserve
- 72 h
- Frequency
- Glide motion
- Jewels
- 30
Spring DriveManufacture
9RA5
Five-day Spring Drive calibre with improved thermal compensation.
- Reserve
- 120 h
- Frequency
- Glide motion
- Jewels
- 38
QuartzManufacture
9F62
High-precision quartz calibre with instant date change.
- Reserve
- 3 years
- Frequency
- 32,768 Hz
- Jewels
- 9