✨ New Arrivals Just Dropped!Explore
HomeStore

Seiko (SII) NH34A/35A/36A/37A/38A/39A Mainspring

Product image 1
Product image 2

Seiko (SII) NH34A/35A/36A/37A/38A/39A Mainspring

Seiko (SII) NH34A/35A/36A/37A/38A/39A Mainspring

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.

For professional modders or watch repair stores interested in long-term purchases, please email us at [email protected]. We are pleased to offer VVIP rates and dedicated support for bulk orders.

$3.50

Original: $10.00

-65%
Seiko (SII) NH34A/35A/36A/37A/38A/39A Mainspring

$10.00

$3.50

Product Information

Shipping & Returns

Description

Seiko (SII) NH34A/35A/36A/37A/38A/39A Mainspring

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.

For professional modders or watch repair stores interested in long-term purchases, please email us at [email protected]. We are pleased to offer VVIP rates and dedicated support for bulk orders.