Seiko Cal. 4M21A Supplement Vol. 2 - Power Resource Change
Supplement to the parts catalogue and technical guide for Seiko Cal. 4M21A kinetic watches. Details the transition from original capacitor units (3029 114 / 3029 116) to new rechargeable battery unit (3027 29R). Includes comparative performance matrix showing charge duration and swing counts between original and new power resources. Contains parts list with visual diagrams and identification markings for capacitor clamp / rechargeable battery clamp assembly (4225 552). Notes compatibility issues and mandatory replacement procedures.
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Document Details
- Format
- Pages
- 2
- Size
- 65.0 KB
- Category
- Horlogerie