Seiko (SII) NH34A/35A/36A/37A/38A/39A Mainspring
Seiko (SII) NH34A/35A/36A/37A/38A/39A Mainspring
Details
It is a critical component in ensuring the watch's consistent and accurate timekeeping. Over time, the mainspring may wear out or lose elasticity, requiring replacement to maintain optimal performance.
- Item Type: Mainspring
- Suitable for: Seiko (SII) NH34A/35A/36A/37A/38A/39A Movement.
Specs Sheet: Datasheet 6R54A (Parts List & Technical Guide)
Directions
The mainspring would be fully wound up by turning the ratchet wheel screw 11 times clockwise. (Manual winding or Screwdriver) Manual winding. Rotate crown clockwise at normal position by minimum 65 times.
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