Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
24 Hour Hand
Date
-Date by Pointer
-Quick Date Correction
Day
-Quick Day Correction
-Retrograde Day
GMT Hand
-Independently-Adjustable 12 Hour Hand
-Independently-Adjustable 24 Hour Hand
Hacking Seconds
Hand Winding
Modular
Power Reserve Indicator
Hands
Retrograde Day Pointer at 2:30
Brand
Seiko
-Credor
Winding
Automatic
-Bi-Directional Automatic Winding
Regulators
Screw Regulator
Production Periods
2000s
2010s
Frequency
28,800 A/h
Anti-Shock
Diashock
Jewels
28
31
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 4:30
-Barrel at 12:00
Seiko 4S27
Seiko 4S36
Seiko 4S76
Seiko 4S77
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