Seiko Cal. 2E20B Parts Catalogue and Technical Guide
Seiko Cal. 2E20B quartz watch movement parts catalogue and technical service guide covering the complete step motor mechanism with fixed-width pulse system. Provides full movement specifications including 15.5 mm diameter, 2.2 mm height, single jewel, and 1.55V battery requirements. Contains exploded diagrams showing all internal movement components, comprehensive parts list with manufacturer reference numbers, train wheel setting device configuration, and electronic circuit reset switch operation. Specifications confirm 2-hand movement architecture with 20-second interval stepping and monthly rate accuracy within 15 seconds across the normal temperature operating range. Essential reference for watch technicians and repair professionals working with this Seiko quartz caliber.
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Document Details
- Format
- Pages
- 5
- Size
- 114.3 KB
- Category
- Watchmaking