Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Date
-Instant Date Change
-Quick Date Correction
Day
-Instant Day Change
Hacking Seconds
Hand Winding
Hands
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
Production Periods
1970s
1980s
1990s
2000s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Elastor
Jewels
17
21
27
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 10:30
-Balance at 12:00
-Balance at 6:00
Central Rotor
Rolex 3000 Family
ETA 2688
ETA 2846
Rolex 3000
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