Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Date
Hand Winding
Hands
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Brand
Seiko
Winding
Automatic
-Bi-Directional Automatic Winding
Regulators
Indexed
Production Periods
2020s
Frequency
28,800 A/h
Anti-Shock
Jewels
35
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
-Balance at 4:30
Seiko 9S27
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