Grail Watch Reference
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Complications
Chronograph
-2-Button
-Cam Switching Chronograph
-Modular Chronograph
-Vertical Clutch Chronograph
Date
-Quick Date Correction
Day
-Quick Day Correction
GMT Hand
Hacking Seconds
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
Date Window at 4:30
Day Window at 3:00
Small Seconds Hand at 12:00
Brand
Bulova
ETA
-ESA
Longines
Winding
Battery
Regulators
Tuning Fork
Production Periods
1960s
1970s
Frequency
170 Hz
300 Hz
32,768 Hz
360 Hz
440 Hz
9,350 Hz
Anti-Shock
Jewels
12
15
Balance Mount
Back-Side Features
Battery
-Battery at 3:00
-Battery at 4:30
Tuning Fork
-Tuning Fork at 1:30
-Tuning Fork at 10:30
-Tuning Fork at 12:00
-Tuning Fork at 6:00
Accuquartz 224
Accutron 214
Accutron 218
Accutron 219
Accutron 221
Accutron 230
ESA 9162
ESA 9164
ESA 9210
Longines 6512
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