Grail Watch Reference
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Complications
Chronograph
-2-Button
-Column Wheel Chronograph
--6-Column Chronograph
-Modular Chronograph
-Vertical Clutch Chronograph
Date
-Quick Date Correction
-Semi-Instantaneous Date Change
Hacking Seconds
Hand Winding
Modular
Hands
Small Seconds Hand at 3:00
Brand
ETA
Parmigiani Fleurier
Seiko
Soprod
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Two Barrel
Regulators
ETACHRON
Production Periods
1990s
2000s
2010s
2020s
Frequency
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
34
37
46
68
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 12:00
-Balance at 3:00
-Balance at 7:30
-Barrel at 1:30
-Barrel at 12:00
Central Rotor
ETA 2894-2
ETA 2894S2
PF315
PF334
Seiko 8R48
SOP 2021/A10-2
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