Grail Watch Reference
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Complications
Date
-Instant Date Change
-Quick Date Correction
Day
-Bilingual Day Wheel
-Quick Day Correction
Hacking Seconds
Hand Winding
Hands
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Day Window at 3:00
Brand
Bulova
IWC
Longines
Omega
Patek Philippe
Rado
Rolex
Seiko
-Daini Seikosha
-Grand Seiko
-Suwa Seikosha
Winding
Automatic
-Bi-Directional Automatic Winding
Battery
Hand winding
Regulators
Quartz
Screw Regulator
Stepper Motor
Production Periods
1960s
1970s
Frequency
16,384 Hz
28,800 A/h
36,000 A/h
8,192 Hz
Anti-Shock
Diashock
Jewels
23
7
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 3:00
-Balance at 4:30
-Battery at 6:00
Suwa Seikosha 35 Quartz Stream
Beta 21
Seiko 3502
Seiko 35A
Seiko 4500
Seiko 4522
Seiko 5206
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