Why NH35 Movement  is So Widely Used for Automatic Watches

Why NH35 Movement is So Widely Used for Automatic Watches

The NH35 movement, produced by Seiko, is a popular automatic watch movement widely used in various watch brands due to its reliability, affordability, and robust performance. Here are some key features and details about the NH35 movement:

Key Features:

  1. Automatic Movement: The NH35 is an automatic (self-winding) movement, meaning it winds itself using the motion of the wearer's wrist. It also supports manual winding.
  2. Accuracy: It typically runs with an accuracy of -20 to +40 seconds per day, although actual performance can vary and can be fine-tuned by a watchmaker.
  3. Power Reserve: The movement has a power reserve of approximately 41 hours when fully wound.
  4. Frequency: It operates at a frequency of 21,600 vibrations per hour (3 Hz), which contributes to its balance between accuracy and durability.
  5. Jewels: The movement features 24 jewels, which help reduce friction and wear in the gear train.
  6. Date Function: It includes a date complication, often displayed at the 3 o'clock position, which can be set via a quick-set function.
  7. Hacking Feature: The NH35 has a hacking feature, allowing the second hand to stop when the crown is pulled out for precise time setting.
  8. Durability: Known for its robustness and reliability, it is designed to withstand everyday wear and tear.
  9. Dimensions: The movement's diameter is approximately 27.4 mm, and its height is around 5.32 mm, making it suitable for a variety of watch case sizes.

Popularity and Usage:

  • Widely Used: The NH35 is not only used by Seiko but also by many other watch brands, particularly in the affordable and mid-range segments, due to its cost-effectiveness and dependable performance.
  • Modding Community: It is also popular in the watch modding community, where enthusiasts modify and customize watches. The NH35's availability and compatibility make it a preferred choice.


  1. Cost-Effective: Offers good performance at a relatively low cost compared to other automatic movements.
  2. Reliable: Known for its reliability and longevity, requiring minimal maintenance.
  3. Ease of Service: Parts are widely available, making it easier and cheaper to service or repair.

Comparison with Other Movements:

  • Compared to Swiss movements like the ETA 2824-2, the NH35 may be less refined but offers similar functionality at a fraction of the cost.
  • It is often compared to the Miyota 8215, another popular Japanese movement. The NH35 is preferred by some due to its hacking feature and smoother hand-winding experience.

Overall, the Seiko NH35 movement is a versatile, reliable, and economical choice for many watchmakers and enthusiasts, balancing performance and affordability effectively.

NH35 movement we have  :

Militado 38mm NH35 Automatic BB58 Retro Watch ML06

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