Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
The Watch Files Podcast
Reference Documents
1979 Citizen Movement Table
Seiko Blue Book Automatic Movement Chronology
Seiko Laurel Brochure
Seiko List of Basic and Derivative Calibres
About Grail Watch
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Complications
Date
-Instant Date Change
-Quick Date Correction
Hands
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Brand
Claro
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Regulators
Production Periods
2000s
Frequency
21,600 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
18
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
-Balance at 4:30
Claro CL-888
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