Seiko 6139A Automatic Chronograph Technical Data
Technical data sheet and comprehensive parts list for the Seiko 6139A automatic chronograph. This service documentation details specifications for a 27.00 mm case diameter, 14.00 mm height movement with 21 jewels, automatic winding, and sweep second hand. Covers the chronograph calendar function (day and date display), bilingual changeover system, and Diaflex oil lubrication device. Includes complete parts identification numbers and materials specifications for all movement components—essential reference material for repair technicians and movement specialists working on this classic automatic chronograph caliber.
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Document Details
- Format
- Pages
- 26
- Size
- 2.0 MB
- Category
- Watchmaking