Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Date
-Quick Date Correction
Day
-Bilingual Day Wheel
-Quick Day Correction
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
Audemars Piguet
Bulova
IWC
Longines
Omega
Patek Philippe
Rado
Rolex
Seiko
-Daini Seikosha
-Suwa Seikosha
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Battery
Regulators
Gyromax
Quartz
Screw Regulator
Stepper Motor
Tuning Fork
Production Periods
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
16,384 Hz
21,600 A/h
28,800 A/h
440 Hz
8,192 Hz
Anti-Shock
Diashock
Jewels
23
36
7
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 4:30
-Balance at 6:00
-Battery at 6:00
Central Rotor
Tuning Fork
-Tuning Fork at 1:30
Daini Seikosha 36 Quartz Stream
Daini Seikosha 52 Stream
Accutron 230
AP 2121
Beta 21
Seiko 3502
Seiko 3600
Seiko 3602A
Seiko 5206
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