Seiko Caliber 21C Parts List and Specifications
Technical specifications and comprehensive parts list for the Seiko caliber 21C movement, an essential reference for watchmakers and service technicians. Documents casing dimensions (17.80 x 15.30 mm), maximum height (3.50 mm), and vibration rate of 19,800 per hour, alongside detailed component numbering for every part in the assembly. Incorporates Seiko's Disashock and Diaflex shock-protection systems. Includes two annotated movement photographs for visual reference during disassembly and repair work. A remarks section outlines alternative barrel arbor and regulator specifications, allowing technicians to identify compatible replacement components and understand configuration options for this caliber.
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Document Details
- Format
- Pages
- 1
- Size
- 101.8 KB
- Category
- Watchmaking