Grail Watch Reference
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Complications
Alarm
Date
-Quick Date Correction
Day
-Quick Day Correction
GMT Hand
Hacking Seconds
Hand Winding
Hands
Central Alarm Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Day Window at 3:00
Brand
A. Schild
Bulova
ETA
-ESA
Seiko
-Suwa Seikosha
Winding
Automatic
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
Battery
Regulators
Indexed
Tuning Fork
Production Periods
1960s
1970s
1990s
2000s
Frequency
28,800 A/h
360 Hz
440 Hz
Anti-Shock
Jewels
15
17
31
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
-Balance at 3:00
Battery
-Battery at 4:30
Central Rotor
Tuning Fork
-Tuning Fork at 1:30
-Tuning Fork at 12:00
Bulova Accutron
Ebauches SA Swissonic
Suwa Seikosha 41 Quartz Stream
Accutron 218
Accutron 219
Accutron 221
Accutron 230
AS 5008
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