Grail Watch Reference
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Complications
24 Hour Hand
Alarm
Date
-Date by Pointer
-Quick Date Correction
-Retrograde Date
Day
-Day by Pointer
-Quick Day Correction
-Retrograde Day
GMT Hand
-Independently-Adjustable 24 Hour Hand
Hacking Seconds
Hand Winding
Power Reserve Indicator
Hands
Power Reserve Pointer at 9:30
Brand
Blancpain
Frédéric Piguet
Seiko
-Credor
-Seiko Instruments Inc.
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
Screw Regulator
Production Periods
1990s
2000s
2010s
2020s
Frequency
28,800 A/h
Anti-Shock
Diashock
Jewels
29
31
38
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 3:00
-Balance at 4:30
-Barrel at 12:00
Central Rotor
FP 1241
Seiko 4S29
Seiko 4S36
Seiko 4S76
Seiko 4S79
Seiko 6R20
Seiko 6R24
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