Steps to Mod Seiko Watches

Assembling a mod Seiko watch requires careful attention to detail and a methodical approach to ensure the components fit together seamlessly and the watch functions properly. Here's a step-by-step guide to help you through the process of assembling a Seiko Mod Watch:

Tools and Equipment:

Before you begin, you should ensure that you have all the necessary tools and components for the assembly. Common tools include screwdrivers, case opening tools, hand removers, movement holders, and tweezers. Additionally, have your modded components, such as the dial, hands, bezel insert, crystal, and movement, ready for installation.

Step-by-Step Assembly:

1. Prepare Your Workspace:

Sup a clean, well-lit workspace where you can perform the assembly without distractions. Make sure you have all your tools and components within reach.

2. Prepare the Case:

If you're using a custom case, ensure it is clean and free from any dust or debris. Check the fit of the movement holder and movement ring within the case to ensure they sit securely.

3. Install the Movement:

Gently place the movement into the case, ensuring that the stem aligns with the crown position and the movement is properly seated in the movement ring. Carefully press down on the movement ring to secure the movement in place.

4. Install the Dial:

Align the dial feet with the corresponding holes on the movement. Press the dial down gently, ensuring it is centered and secure.

5. Install the Hands:

Use hand removers or tweezers to carefully install the hour, minute, and second hands. Ensure they are aligned correctly and are not touching the dial or other components.

6. Install the Bezel Insert:

If your watch has a rotating bezel, carefully press the bezel insert into the bezel ring, aligning any markings or indices. Make sure it fits securely and is properly seated.

7. Install the Crystal:

If you're using a new crystal, place it over the dial and press it down gently until it snaps into place. If you're reusing the original crystal, ensure it is clean and free from fingerprints or debris.

8. Case Closure:

Carefully place the case back over the assembled components. Ensure that any gaskets or seals are properly aligned and in place to maintain water resistance.

9. Secure the Case Back:

Depending on your case type, use the appropriate tools to secure the case back. Make sure the case back is tightened evenly to avoid damaging the threads.

10. Functional Tests:

Gently wind the crown to engage the movement. Set the time and date (if applicable) to ensure the watch functions properly. Test the rotating bezel (if present) to ensure smooth rotation.

11. Quality Check:

Carefully inspect the watch for any misalignment, dust, or fingerprints. If you notice any issues, disassemble and reassemble the components as needed.

12. Final Touches:

Once you're satisfied with the assembly, use a soft cloth to clean the watch's exterior. Ensure that the watch looks clean and presentable before wearing or displaying it.


Remember, assembling a modded watch requires patience, precision, and attention to detail. If you're new to watch assembly, consider practicing with non-critical components or seeking guidance from experienced watch modders before working on your final project.

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.