Hattori Seiko Cal. 2P20A Movement Parts Catalogue and Technical Guide
Parts catalogue and technical guide for Hattori Seiko Cal. 2P20A quartz movement. Includes detailed specifications, disassembly and reassembly procedures, parts diagram with numbered components, lubrication instructions, and technical notes on circuit block assembly. Features two-hand movement with 20-second step motor drive, step rotor, train wheel setting device, and electronic circuit reset switch. Specifications: 13.0-15.5mm diameter, 1.8mm height, SEIKO SR516SW or Maxell SR516SW battery (1.55V), 2 jewels.
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Document Details
- Format
- Pages
- 6
- Size
- 171.0 KB
- Category
- Horlogerie