Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
Reference Documents
1979 Citizen Movement Table
Seiko Blue Book Automatic Movement Chronology
Seiko Laurel Brochure
Seiko List of Basic and Derivative Calibres
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Complications
Chronograph
-2-Button
-Cam Switching Chronograph
-Modular Chronograph
-Vertical Clutch Chronograph
Date
-Quick Date Correction
Day
-Quick Day Correction
Hacking Seconds
Hand Winding
Hands
12 Hour Chronograph Hand at 6:00
30 Minute Chronograph Hand at 9:00
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Day Window at 3:00
Small Seconds Hand at 12:00
Small Seconds Hand at 6:00
Brand
Bulova
ETA
-ESA
Seiko
-Daini Seikosha
Winding
Automatic
-Bi-Directional Automatic Winding
Battery
Hand winding
Regulators
Quartz
Tadpole Regulator
Tuning Fork
Production Periods
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
300 Hz
32,768 Hz
360 Hz
Anti-Shock
Diashock
Incabloc Double-Cone
Jewels
12
17
23
25
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 5:00
-Battery at 3:00
Tuning Fork
-Tuning Fork at 11:00
-Tuning Fork at 12:00
Accuquartz 224
Accutron 219
ESA 9164
ESA 9210
ETA 7001
Seiko 5216
Seiko 5246
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