Seiko NH35 Movement: A Complete Guide for watch enthusiasts

Hello there, my friends! Maher Azam here, and I am thrilled to introduce you to the world of the Seiko NH35 movement. As a marketer and a watch enthusiast, I know the importance of finding a reliable and accurate timepiece that also has a certain level of style and affordability. And that’s where the Seiko NH35 movement comes in.

This complete guide is a must-read for anyone who is passionate about watches and wants to learn more about this exceptional movement. From its history to its technical specifications, from its benefits to its limitations, this guide has it all.

So, whether you’re an aspiring watchmaker or simply curious about the intricate workings of a watch, I encourage you to dive in and discover what makes the Seiko NH35 movement a true gem in the world of horology. Let’s get started!

Invicta Men's Pro Diver Collection Coin-Edge Automatic Watch
16,878 Reviews
Invicta Men's Pro Diver Collection Coin-Edge Automatic Watch
  • Stainless steel case 40mm diameter x 14.1mm thick; Exhibition case back; Black dial; Luminous hands.Band Length: 205mm
  • NH35A Japanese Automatic movement, 24 jewel; Assembled in Malaysia; Watch weight 155 grams
  • Includes gift box, instructions and 3 year limited manufacturer warranty; Invicta Customer Service can be reached at 1-800-327-7682 for questions (re: Additional links, band replacement, band adjustment, warranty questions, etc.)

Page Contents

✚ Seiko NH35 technical sheet

Here is a technical sheet for the Seiko NH35 movement:

  • Movement Type: Automatic, self-winding
  • Diameter: 27.4 mm
  • Height: 5.32 mm
  • Vibrations Per Hour: 21,600
  • Jewels: 24
  • Power Reserve: Approximately 41 hours
  • Hacking: Yes (the second-hand stops when the crown is pulled out)
  • Hand-Winding: Yes (can be manually wound)
  • Accuracy: -20 to +40 seconds per day
  • Functions: Hours, minutes, seconds, date display with quickset function
  • Construction: Diashock shock absorber, unidirectional winding system, Spron 110 mainspring material, and magnetic resistance of 4,800 A/m.

Note that these specifications may vary slightly depending on the specific watch model that utilizes the NH35 movement.

✚ Seiko NH35 in detail

The Seiko NH35 movement is an automatic mechanical movement that is widely used in many watches due to its accuracy, reliability, and robustness. The movement is part of Seiko’s 4R series, which is known for its durability and high performance. Here are some key features and details of the NH35 movement:

Seiko NH35 in detail
  • Accuracy: The Seiko NH35 movement is designed to have an accuracy of -20 to +40 seconds per day. This level of accuracy is considered adequate for most watch enthusiasts.
  • Power reserve: The NH35 movement has a power reserve of approximately 41 hours when fully wound. This means that the watch can run for 41 hours without requiring any additional winding.
  • Jewels: The NH35 movement has 24 jewels, which serve as bearings for the movement’s rotating components. The jewels help reduce friction and wear, which can increase the movement’s lifespan.
  • Hacking Seconds: The NH35 movement has a hacking function, which means that the second hand can be stopped when the crown is pulled out to set the time. This feature makes it easier to synchronize the watch with an accurate time source.
  • Hand-winding: The NH35 movement can be manually wound by turning the crown. This is a useful feature if the watch has not been worn for an extended period, as it allows the user to quickly power the movement without waiting for the automatic rotor to wind it.
  • Shock resistance: The NH35 movement features Seiko’s proprietary Diashock system, which helps protect the movement from shocks and impacts that can occur during normal wear.
  • Magnetic resistance: The NH35 movement has a magnetic resistance of 4,800 A/m, which means that it can withstand exposure to magnetic fields that can affect the movement’s accuracy.

Overall, the Seiko NH35 movement is a reliable and robust automatic mechanical movement that is widely used in many affordable and high-end watches. Its accuracy, power reserve, hacking function, and shock and magnetic resistance make it an excellent choice for watch enthusiasts who value precision and durability.

Seiko NH35 Precision detail

Brands that use NH35 Movement

The Seiko NH35 movement is a popular choice for many watch brands due to its reliability and affordability. Some of the brands that use the NH35 movement in their watches include:

  1. Seiko: Seiko uses the NH35 movement in many of its watches, including the Seiko 5 Sports and the Prospex series.
  2. Orient: Orient, a subsidiary of Seiko, also uses the NH35 movement in some of its watches, such as the Orient Mako II and the Ray II.
  3. Invicta: Invicta uses the NH35 movement in many of its dive watches, such as the Pro Diver and the Grand Diver.
  4. Parnis: Parnis, a Chinese watch brand, uses the NH35 movement in many of its affordable mechanical watches.
  5. Vostok: Vostok, a Russian watch brand, uses the NH35 movement in some of its watches, such as the Vostok Amphibian.
  6. Steinhart: Steinhart, a German watch brand, uses the NH35 movement in some of its watches, such as the Ocean One and the GMT-Ocean.
  7. Pagani Design: Pagani Design, a Chinese watch brand, uses the NH35 movement in many of its affordable mechanical watches, including the PD-1661 and the PD-1671.

These are just some of the many brands that use the Seiko NH35 movement in their watches. The popularity of the NH35 movement is due to its reliability, accuracy, and affordability, which make it an excellent choice for both affordable and high-end watches.

✚ NH35 and NH35A What is the difference?

The Seiko NH35 and NH35A movements are often used interchangeably, but there is technically a difference between the two.

The NH35 is the original version of the movement, and it was first introduced in 2011. It features a power reserve of approximately 41 hours, 24 jewels, and a frequency of 21,600 vibrations per hour (3 Hertz). It also includes the hacking function, which allows the second hand to stop when the crown is pulled out to set the time.

The NH35A is an updated version of the NH35 movement, and it was introduced in 2019. The NH35A has the same technical specifications as the NH35, but it includes an additional feature known as “reduce friction,” which helps reduce the amount of friction between the movement’s components. This results in a more efficient movement with better accuracy and a longer lifespan.

In terms of compatibility, both the NH35 and NH35A movements are interchangeable and can be used in watches that are designed to accommodate either movement. However, it is important to note that watches designed for the NH35A movement may not be compatible with the NH35 movement due to the difference in their technical specifications.

In summary, the Seiko NH35A is an updated version of the NH35 movement that includes an additional feature to reduce friction, resulting in improved accuracy and lifespan. The two movements are generally interchangeable, but watches designed for the NH35A may not be compatible with the NH35 due to the difference in their technical specifications.

✚ Seiko NH35 vs 4R35

Seiko NH35 vs 4R35

The Seiko NH35 and 4R35 movements are both part of Seiko’s 4R series of mechanical movements and are often compared due to their similarities. Here are some of the main differences between the NH35 and 4R35 movements:

  1. Accuracy: The Seiko 4R35 movement is designed to have a higher level of accuracy than the NH35, with a range of -15 to +25 seconds per day, compared to the NH35’s -20 to +40 seconds per day.
  2. Power reserve: The Seiko 4R35 movement has a slightly longer power reserve than the NH35, with approximately 41 hours compared to the NH35’s 40 hours.
  3. Jewels: The 4R35 movement has 23 jewels, one less than the NH35’s 24 jewels. However, this is not likely to have a significant impact on performance.
  4. Hacking: Both movements have a hacking function, which allows the second hand to stop when the crown is pulled out to set the time.
  5. Hand-winding: Both movements can be manually wound by turning the crown.
  6. Shock resistance: Both movements feature Seiko’s Diashock system, which helps protect the movement from shocks and impacts.
  7. Magnetic resistance: Both movements have a magnetic resistance of 4,800 A/m.

In summary, the main differences between the Seiko NH35 and 4R35 movements are in their accuracy and power reserve. The 4R35 has a slightly higher accuracy range and longer power reserve, but both movements are reliable and robust, with similar features such as hacking, hand winding, and shock and magnetic resistance.

Ultimately, the choice between the two movements will depend on personal preference and the specific requirements of the watch.

It is noteworthy that the Seiko NH35 obtains a better precision rating than the 4R35, although in practice there is not that much difference between one and the other.

In short, the main difference is that the NH35s are cheaper and easier to get, even though they don’t have the Seiko brand engraved anywhere.

Read our guide on Seiko SKX007 Diver Watch Ultimate Review

✚ NH35 vs. Miyota 9015

✚ NH35 vs. Miyota 9015

The Seiko NH35 and Miyota 9015 are two popular mechanical movements often used in affordable watches. Here are some of the main differences between the two movements:

  1. Accuracy: The Miyota 9015 is generally considered to be a more accurate movement than the NH35, with a range of -10 to +30 seconds per day compared to the NH35’s -20 to +40 seconds per day.
  2. Power reserve: The Miyota 9015 has a slightly longer power reserve than the NH35, with approximately 42 hours compared to the NH35’s 40 hours.
  3. Jewels: The Miyota 9015 has 24 jewels, one more than the NH35’s 24 jewels.
  4. Hacking: Both movements have a hacking function, which allows the second hand to stop when the crown is pulled out to set the time.
  5. Hand-winding: Both movements can be manually wound by turning the crown.
  6. Shock resistance: Both movements have shock protection, but the NH35 uses Seiko’s Diashock system while the Miyota 9015 uses the Parashock system.
  7. Magnetic resistance: The Miyota 9015 has a magnetic resistance of 4800 A/m, while the NH35 has a magnetic resistance of 4800 A/m.

In summary, the Miyota 9015 movement is generally considered to be more accurate than the Seiko NH35, with a slightly longer power reserve and one more jewel.

However, the NH35 has a more widely recognized shock protection system and is often regarded as more robust and reliable. Ultimately, the choice between the two movements will depend on personal preference and the specific requirements of the watch.

✚ NH35 vs 7S26

✚ NH35 vs 7S26

The NH35 and 7S26 are both automatic mechanical watch movements produced by Seiko, but they have some differences in their specifications and performance:

  1. Accuracy: The NH35 movement is known to be more accurate than the 7S26, as it has a higher beat rate of 21,600 vibrations per hour (vph) compared to the 7S26’s 21,600 vph. The NH35 also has a more sophisticated regulating system, which helps to improve its accuracy over time.
  2. Hacking and Hand Winding: The NH35 movement has both hacking and hand-winding features, meaning that you can stop the second hand to set the time precisely, and you can manually wind the watch if it runs out of power. In contrast, the 7S26 has no hacking or hand-winding capabilities.
  3. Power Reserve: The NH35 has a power reserve of approximately 41 hours, while the 7S26 has a slightly lower power reserve of around 40 hours.
  4. Jewels: The NH35 has 24 jewels, while the 7S26 has 21 jewels. More jewels generally mean smoother operation and better durability.
  5. Cost: The NH35 is generally more expensive than the 7S26 due to its higher accuracy and additional features.

Overall, the NH35 is considered to be an improvement over the 7S26 in terms of accuracy and features, although the 7S26 is still a reliable and popular movement used in many Seiko watches.

✚ How to set the time and date for NH35?

To set the time and date on an NH35 movement, follow these steps:

  1. Pull the crown out to its second position, which will stop the second hand from moving and allow you to set the time.
  2. Turn the crown clockwise or counterclockwise to adjust the hour and minute hands to the correct time.
  3. Push the crown back to its original position to start the second hand moving again.
  4. To set the date, pull the crown out to its first position.
  5. Turn the crown clockwise to advance the date, and counterclockwise to move the date backward.
  6. Once you have set the date, push the crown back to its original position.

Note: It is recommended to set the time and date when the watch is not displaying a time between 9:00 pm and 3:00 am, as the date function is engaged during this time, and adjusting the date during this period may damage the movement.

Let me now talk about some of the most important questions asked about the Seiko NH35 movement.

Is NH35A a good movement?

Yes, the Seiko NH35A is considered a good movement by many watch enthusiasts and experts. It is known for its reliability, accuracy, and affordability, making it a popular choice for both entry-level and mid-range watches. The NH35A is a workhorse movement that can be found in many watches, from Seiko’s own brands to various microbrands.

It is often compared favorably to other entry-level movements such as the ETA 2824-2 and the Miyota 9015, offering similar performance at a lower cost. However, like any movement, it has its strengths and weaknesses, and the quality of the watch that uses can also play a role in its overall performance. Nonetheless, overall, the NH35A is a solid movement and a good choice for watches at its price point.

Is Seiko NH35 movement automatic?

Yes, the Seiko NH35 movement is an automatic movement, also known as a self-winding movement. This means that it is designed to wind itself through the natural movement of the wearer’s wrist, using a rotor that rotates with the movement of the watch.

This automatic winding mechanism eliminates the need for manual winding, allowing the watch to run continuously as long as it is worn regularly.

Additionally, the Seiko NH35 movement also allows for manual winding, which can be useful in situations where the watch has not been worn for an extended period and needs to be wound manually to start running again.

Conclusion

In conclusion, the Seiko NH35 movement is a reliable and accurate automatic mechanical movement that is widely used in Seiko watches. It has a higher beat rate, more jewels, and more advanced features compared to the 7S26 movement, making it a popular choice among watch enthusiasts.

This guide has provided an overview of the NH35 movement, including its history, technical specifications, and performance characteristics. We have discussed its accuracy, power reserve, hacking, hand-winding capabilities, and how to set the time and date.

The NH35 is known for its durability and precision, and it is often found in high-quality dive watches due to its water resistance capabilities. While it is more expensive than the 7S26 movement, it offers additional features and improved accuracy that make it a worthwhile investment for watch enthusiasts.

Overall, the Seiko NH35 movement is a well-respected and reliable movement that has earned a reputation for its accuracy and dependability in the watch industry. It is a popular choice among watch enthusiasts and collectors for its durability, precision, and overall performance.

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