Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
24 Hour Hand
Chronograph
-2-Button
-Column Wheel Chronograph
Date
-Instant Date Change
-Quick Date Correction
Day
-Outer Day Wheel
-Quick Day Correction
GMT Hand
-Independently-Adjustable 24 Hour 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 12:00
Small Seconds Hand at 6:00
Brand
Rolex
Seiko
-Suwa Seikosha
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Battery
Regulators
Chronergy
Microstella
Quartz
Stepper Motor
Production Periods
1960s
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
16,384 Hz
28,800 A/h
8,192 Hz
Anti-Shock
Elastor
Paraflex
Jewels
31
7
Balance Mount
Balance Bridge
Back-Side Features
Balance
-Balance at 6:00
-Battery at 6:00
Central Rotor
Rolex 2231
Rolex 2235
Rolex 2236
Rolex 3131
Rolex 3132
Rolex 3135
Rolex 3187
Rolex 3235
Rolex 3255
Rolex 3285
Rolex 4161
Seiko 3502
Seiko 35A
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