NH35 or NH36? Choosing Your Seiko Movement Kit

Introduction

Building a custom watch is an exciting journey that combines craftsmanship with personal style. One of the most critical decisions in this process is choosing the right watch movement—the engine that powers your timepiece. Seiko's NH35 and NH36 movements are two popular choices among watch enthusiasts.

Both offer reliability and performance, but understanding their differences will guide you in selecting the ideal movement for your watch build.

Understanding Seiko Movement Kits

Seiko has earned a stellar reputation in the watchmaking world for producing high-quality and dependable movements. The NH35 and NH36 are part of their respected NH series, known for robust construction and accurate timekeeping. These automatic movements are favorites among both professional watchmakers and hobbyists due to their balance of quality and affordability.

Comparing the NH35 and NH36 Watch Movements

While the NH35 and NH36 share many similarities, key differences between them might influence your choice.

Common Features

Both movements come with:

Automatic and Manual Winding: They can self-wind through wrist motion and also be manually wound via the crown.
Hacking Second Hand: Allows stopping the second hand when setting the time, enabling precise adjustments.
24 Jewels: Use of jewels reduces friction within the movement, enhancing accuracy and longevity.
Frequency of 21,600 VPH: Operating at 21,600 vibrations per hour ensures a smooth sweep of the seconds hand.
Power Reserve: Approximately 41 hours of power when fully wound.

Key Differences: Day & Date Complication

The most significant difference lies in their complications:

NH35 Movement: Features a date display, typically located at the 3 o'clock position.
NH36 Movement: Offers both day and date displays, adding extra functionality to your watch.

Choosing the NH35 means preferring a simpler dial with essential features. Opting for the NH36 provides the added convenience of viewing both the day and date at a glance.

Design and Dial Considerations

Your movement choice directly impacts the dial and overall design of your watch.

For NH35: Select a dial with a single date window aligned correctly with the movement's date wheel.
For NH36: Choose a dial that accommodates both day and date windows, ensuring they align perfectly with the movement.

Consider your aesthetic preferences. If a minimalist design appeals to you, the NH35's simpler dial might be ideal. If you appreciate additional complications and a more detailed dial, the NH36 offers that sophistication.

Case Compatibility

Both movements share similar dimensions:

Diameter: Approximately 27.4 mm
Height: Around 5.32 mm

This similarity means they can fit into the same watch cases. However, if opting for the NH36, double-check that the case provides enough space for the additional day wheel.

Performance and Reliability

Renowned for their reliability, both the NH35 and NH36 power numerous watches, including models in Seiko's own Seiko 5 series. Their robust construction and ease of maintenance make them excellent choices for custom watch projects.

Which Movement Should You Choose?

Your decision between the NH35 and NH36 depends on personal preferences and the features you value in a watch.

Choose the NH35 if you:

Prefer a minimalist aesthetic with a clean, uncluttered dial.
Want a slightly simpler assembly process for your watch build.
Value essential features without additional complications.

Choose the NH36 if you:

Desire the added functionality of a day display alongside the date.
Enjoy a more complex dial design with extra features.
Aim to create a watch that stands out with its detailed complications.

The NH36's additional features offer increased convenience and sophistication, making it a popular choice among watch enthusiasts.

Ready to start your project with the NH36? Check out the Seiko NH36 Movement Kit at Rotate Watches.

Integrating the Movement into Your Watch Build

When building your watch, ensuring all components are compatible with your chosen movement is essential.

Dial Selection

NH35: Choose a dial with a date window positioned correctly to align with the movement.
NH36: Select a dial that accommodates both day and date windows, ensuring proper alignment.

Proper alignment is crucial for both the functionality and appearance of your watch.

Hands Compatibility

Select hands that fit the movement's pinion sizes:

Hour Hand Opening: 1.5 mm
Minute Hand Opening: 1.0 mm
Second Hand Opening: 0.2 mm

Using the correct hand sizes ensures seamless operation and optimal performance.

Case Selection

Verify that your watch case suits the movement's dimensions and complications. While the NH35 and NH36 share similar sizes, confirm that the case accommodates the NH36's additional day wheel if necessary.

Find compatible components at Rotate Watches for quality parts and accessories.

Examples of Watches Using NH35 and NH36 Movements

Understanding where these movements are used can help inform your decision.

NH35: Frequently found in microbrand watches and custom builds due to its reliability and simplicity. Brands appreciate its classic design and ease of use.
NH36: Powers many of Seiko's own watches, such as the Seiko 5 Sports series, admired for its day-date functionality. It's favored among enthusiasts who value added features without sacrificing reliability.

Their widespread use ensures that spare parts and aftermarket components are readily available, benefiting custom watch builders.

Essential Tools for Your Watch Build

Assembling a watch requires precision and the right tools. Before you begin, make sure to:

Gather required tools like watchmaker's screwdrivers, tweezers, and a watch case press from your Rotate Watch Making kit.
Wear gloves to prevent oils and dirt from transferring to the movement or dial.
Use a dust blower and Rodico putty to keep components clean during assembly.

Having the proper tools ensures a smoother assembly process and a professional result.

Consider movement kits from Rotate Watches, which may include essential tools to simplify your build.

Conclusion

Choosing between the NH35 and NH36 movement kits is a significant step in your watch-building journey. Both offer reliability and precision, but the NH36 provides additional functionality with its day-date display, offering convenience and a more sophisticated aesthetic. Its versatility and widespread use make it an excellent choice for both novice and experienced watchmakers.

Building your own watch is more than assembling parts; it's about creating a timepiece that reflects your style and personality. With the NH36 movement kit and some dedication, you can craft a watch that's truly unique.

Ready to create your custom timepiece? Start with the Seiko NH36 Movement Kit from Rotate Watches.

FAQs

Is the NH36 movement reliable?

Yes, the NH36 is highly reliable and widely used in the watch industry for its durability and accuracy.

Does the NH36 support hacking and manual winding?

Absolutely, the NH36 features hacking seconds and allows for manual winding.

Can I use any dial with the NH36 movement?

You'll need a dial designed specifically for both day and date windows to align properly with the NH36.

Where can I find compatible components for the NH36 movement?

Compatible dials, hands, and cases are available at Rotate Watches.

What tools are essential for assembling my watch with the NH36 movement?

Gather required tools like watchmaker's screwdrivers, tweezers, gloves, and a watch case press to ensure a smooth assembly process.

Begin your watch-building adventure today with the Seiko NH36 Movement Kit and quality components from Rotate Watches.