Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Date
-Date by Pointer
-Quick Date Correction
Hacking Seconds
Hand Winding
Tourbillon
-Flying Tourbillon
Hands
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Pointer at 12:00
Date Window at 3:00
Open Heart at 6:00
Brand
Progress
Seiko
Winding
Automatic
-Bi-Directional Automatic Winding
Hand winding
Two Barrel
Regulators
Screw Regulator
Production Periods
1990s
2000s
Frequency
28,800 A/h
Anti-Shock
Diashock
Incabloc Double-Cone
Jewels
23
25
26
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 4:30
-Barrel at 12:00
-Barrel at 3:00
-Tourbillon at 6:00
Progress 6361
Seiko 4S15
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