Grand Seiko 9R31

Grand Seiko
Spring Drive
28,800
vph (4.0Hz)
72h
Power Reserve
37
Jewels
0mm
Ø × 0mm
Hacking: Yes
Hand-winding: Yes

Watches using this caliber (0)

No watches in the database currently use this caliber.

Grand Seiko Grand Seiko 9R31 — Specs, Watches & Manufacturers | lug²lug