Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
24 Hour Hand
Date
-Instant Date Change
-Quick Date Correction
Day
-Instant Day Change
GMT Hand
Hacking Seconds
Hand Winding
Hands
Central 24 Hour Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Day Window at 3:00
Brand
ETA
Rolex
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Regulators
ETACHRON
Microstella
Production Periods
1980s
1990s
2000s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Elastor
Jewels
17
27
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 10:30
Central Rotor
ETA 2688
Rolex 3075
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