Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Hand Winding
Hands
Open Heart at 5:00
Brand
Miyota
Winding
Automatic
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Regulators
Production Periods
2010s
Frequency
28,800 A/h
Anti-Shock
Jewels
21
Balance Mount
Balance Cock
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 7:30
Central Rotor
Miyota 6T28
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