Brand Grand Seiko Caliber Number 9S85 / 9S85A Movement Type Automatic (Hi-Beat) Jewels 37 Power Reserve 55 hours Vibrations Per...
Hi-Beat
Manufacturer Seiko Caliber Number 2906, 2906A Movement Type Automatic Diameter 18mm (casing) Height 5.35mm Jewels 17 Vibrations Per Hour 28,800...
Seiko caliber 9R86 found in the Grand Seiko Spring Drive model SBGC005. 50 jewels and consisting of 416 parts. Made in Japan.
