Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
24 Hour Hand
Chronograph
-2-Button
-Cam Switching Chronograph
Date
-Date by Pointer
-Quick Date Correction
Day
-Day by Pointer
-Quick Day Correction
-Retrograde Day
GMT Hand
-Independently-Adjustable 12 Hour Hand
Hacking Seconds
Hand Winding
Modular
Month
Moon Phase
Regulator
Hands
24 Hour Hand at 9:00
Brand
Chronoswiss
ETA
-Valjoux
Miyota
Seiko
-Credor
Tianjin
-Sea-Gull
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
--Counter-Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
Screw Regulator
Valjoux
Production Periods
1980s
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Citizen Parashock
Diashock
Incabloc Double-Cone
Jewels
17
20
21
25
28
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 4:30
-Barrel at 12:00
Central Rotor
Chronoswiss C.123
ETA 7751
ETA 7761
Miyota 8217
Miyota 8219
Miyota 82S7
Seiko 4S77
ST17F2
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