Grail Watch Reference
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Complications
Alarm
Chronograph
-2-Button
-Cam Switching Chronograph
Date
-Instant Date Change
-Quick Date Correction
Day
-Bilingual Day Wheel
-Instant Day Change
-Quick Day Correction
Hacking Seconds
Hand Winding
Hands
12 Hour Chronograph Hand at 6:00
30 Minute Chronograph Hand at 12:00
Central 60 Second Chronograph Hand
Central Alarm Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Day Window at 3:00
Small Seconds Hand at 9:00
Brand
A. Schild
Bulova
ETA
-Valjoux
Seiko
-Daini Seikosha
-Suwa Seikosha
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Battery
Hand winding
Regulators
ETACHRON
Indexed
Quartz
Stepper Motor
Tadpole Regulator
Tuning Fork
Valjoux
Production Periods
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
16,384 Hz
21,600 A/h
28,800 A/h
32,768 Hz
440 Hz
Anti-Shock
Diashock
Incabloc Double-Cone
Jewels
17
22
24
25
31
7
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 3:00
-Balance at 4:30
-Balance at 7:30
-Barrel at 10:30
-Battery at 10:30
Central Rotor
Tuning Fork
-Tuning Fork at 12:00
ETA 7750 Family
Accutron 221
AS 5008
ETA 7750
Seiko 3882A
Seiko 3883A
Seiko 5245
Seiko 5256
Seiko 6810
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