Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
24 Hour Hand
Chronograph
-2-Button
-Column Wheel Chronograph
--8-Column Chronograph
GMT Hand
Hacking Seconds
Hand Winding
Power Reserve Indicator
Tourbillon
Hands
Open Heart at 9:00
Brand
Audemars Piguet
Seiko
-Credor
-Seiko Instruments Inc.
--Time Module Inc.
-Shizukuishi Watch Studio
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Two Barrel
Regulators
ETACHRON
Screwed Balance
Production Periods
2010s
2020s
Frequency
21,600 A/h
Anti-Shock
Diashock
Jewels
22
24
29
30
34
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 3:00
-Barrel at 10:30
-Barrel at 12:00
-Barrel at 6:00
Central Rotor
Column Wheel
-Column Wheel at 6:00
-Tourbillon at 3:00
AP 2912
AP 2913
AP 2941
Seiko 4R38
Seiko 4R39
Seiko 4R71
Seiko 6830
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