Grail Watch Reference
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Complications
Chronograph
-2-Button
-Column Wheel Chronograph
--9-Column Chronograph
-Flyback Chronograph
Date
-Instant Date Change
-Quick Date Correction
-Semi-Instantaneous Date Change
Day
-Bilingual Day Wheel
-Instant Day Change
-Quick Day Correction
Hacking Seconds
Month
-Quick Month Correction
Hands
12 Hour Chronograph Hand at 6:00
30 Minute Chronograph Hand at 3:00
Central 60 Second Chronograph Hand
Central Date Pointer
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Date Window at 6:00
Day Window at 11:30
Day Window at 3:00
Month Window at 12:30
Small Seconds Hand at 9:00
Brand
ETA
-Valjoux
Seiko
-Suwa Seikosha
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Battery
Hand winding
Regulators
ETACHRON
Quartz
Stepper Motor
Production Periods
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
16,384 Hz
21,600 A/h
28,800 A/h
32,768 Hz
Anti-Shock
Incabloc Double-Cone
Jewels
17
21
25
7
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 10:30
-Balance at 12:00
-Battery at 10:30
Central Rotor
Column Wheel
-Column Wheel at 6:00
-Column Wheel at 7:30
ETA 2600 Family
ETA 2800 Family
Suwa Seikosha 38 Quartz Stream
ETA 2650
ETA 2660
ETA 2671
ETA 2678
Seiko 3823A
Valjoux 235
Valjoux 237
Valjoux 725
Valjoux 730
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