Seiko Cal. 4M21A Supplement Vol. 2 - Power Resource & Parts
Supplement to the parts catalogue and technical guide for Seiko caliber 4M21A. Details changes to movement parts including transition from original capacitor unit to new rechargeable battery unit (3027 29R). Includes comparative performance matrix, parts specifications with visual diagrams, and installation notes. Contains parts list with original capacitor units (3029 114, 3029 116), capacitor/battery clamp (4225 552), and new rechargeable battery unit with discrimination markings.
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Document Details
- Format
- Pages
- 2
- Size
- 65.0 KB
- Category
- Horlogerie