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