Seiko Quartz Cal. 8A20A/8A21A Stopwatch Technical Guide
Technical guide and parts catalogue for Seiko quartz stopwatch calibers 8A20A and 8A21A. Includes specifications, circuit block structure, display functions with battery check and hand adjustment procedures, disassembly and reassembly instructions for case and movement with lubrication specifications, detailed exploded views with part numbers for train wheels, bridges, rotors, coils blocks, and accessories. Battery: SR44W 1.55V.
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Document Details
- Format
- Pages
- 12
- Size
- 323.8 KB
- Category
- Horlogerie