Seiko
7S26A
The Seiko 7S26A is an automatic mechanical caliber of the Seiko 7S family, introduced in the 1990s to equip many Seiko 5s and diver's watches. It combines bi-directional automatic
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Seiko
at the bench.
Seiko represents a broad Japanese mechanical watchmaking tradition, documented here through movements actually studied at the bench. This hub brings the available profiles, workshop guides and watches together without inventing missing variants.
- Documented movements
- 2
- Workshop documents
- 4
- Watches from the bench
- 0
Documented movements
Documented movements
Seiko
6309A
The Seiko 6309A is a Japanese 63 series automatic mechanical caliber, launched in 1976. The Seiko Technical Guide documents movement at 21,600 vibrations/hour with a quick-correcti
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