TIMEHUNTER
Grand Seiko Calibre

9S85

High-beat mechanical calibre.

Technical Profile

Architecture and specifications

Movement typeAutomatic high-beat
Frequency36,000 vph
Power reserve55 h
Jewels37
ComplicationsDate
ArchitectureManufacture
Reliability profileHigh horology
Service accessSpecialist
TimeHunter Analysis

Collector context

High-beat mechanical calibre. Evaluate the complete watch rather than the calibre in isolation: condition, regulation, service history and correct parts materially affect ownership quality.

A famous calibre can add historical interest, but maintenance condition remains more important than reputation alone.
Related Calibres

9RA5

Five-day Spring Drive calibre with improved thermal compensation.

View calibre →
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