Grand Seiko · 9S mechanical
9S65
Grand Seiko’s three-day, 4 Hz automatic with date and stop seconds.
At a glance
- Type
- Automatic mechanical
- Display / complication
- Date
- Architecture
- Reverser-gear automatic winding, MEMS escapement components
- Timebase
- 28,800 vph / 4 Hz
- Power reserve
- Approx. 72 h
- Jewels
- 35
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 SBGR261
An example from the linked references. Check the exact model and production generation.
What distinguishes it
Look beyond the reference.
MEMS manufacturing allows light, precisely shaped escapement components. Unlike the earlier 9S55’s Magic Lever system, the 9S65 uses a reverser gear train for automatic winding.
For the enthusiast
Grand Seiko distinguishes its movement test standard from normal-use accuracy. Read those conditions before comparing a laboratory daily-rate figure with what another watch promises on the wrist.