Seiko Quartz Cal. 8A20A/8A21A Parts List
Seiko quartz stopwatch parts catalogue covering calibers 8A20A (4-jewel) and 8A21A (6-jewel). Features comprehensive exploded-view diagrams with precise part numbers and component identification throughout the movement. Details battery specifications (SR44W, 1.55V; IEC standard 357; SONY EVEREDY 397 equivalent), screws, dial assembly, switch mechanisms, terminals, circuit blocks, connectors, and battery contacts. Essential service manual reference for technicians servicing or restoring these stopwatch movements. Supports accurate parts ordering and assembly verification during repair work.
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Document Details
- Format
- Pages
- 12
- Size
- 323.8 KB
- Category
- Watchmaking