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Modding Seiko watches is a fascinating hobby that lets you personalise your timepiece. This guide offers a high-level look into the world of Seiko watch modding, exploring popular models, required tools, common parts, and a step-by-step modding guide to set you off on the right track for your modding journey!

I have built or modified about five watches and found the process simpler and easier each time. For many people, taking apart a watch and changing parts can be quite daunting, but with so many resources available, it really shouldn’t worry you. Taking your time and with a bit of patience, the world of modifying watches can make a very fun and exciting hobby. 

Why Mod Your Seiko Watch?

Personalisation and Uniqueness

Express yourself by crafting a unique Seiko watch that reflects your style. So many times, we see a watch but would like to make slight stylistic changes to make this our own! Modding allows this.

Satisfaction and Budget-Friendly Upgrades

Achieve a high-end look without breaking the bank. Many simple mods can be cost-effective! swapping out a bezel can drastically change the look and feel of a watch and is a fairly cost-effective mod that can be done at home.

Popular Seiko Watches for Modding

Seiko SKX007

• Specifications: Automatic movement, 200m water resistance, 42mm case diameter.

• Modding Benefits: The SKX007 is a classic dive watch loved by modders for its robust build and timeless design. The availability of numerous aftermarket parts allows for extensive customisation. Its water-resistant nature makes it a great base for creating your unique dive watch.

Seiko SNK800 Series

• Specifications: Automatic movement, 30m water resistance, 37mm case diameter.

• Modding Benefits: The SNK800 Series is ideal for beginners due to its affordability and simplicity. Modders appreciate the clean dial and compact size as a canvas for creativity. It's an excellent option for those wanting to practice and experiment without a significant investment.

  
  

Seiko Turtle

• Specifications: Automatic movement, 200m water resistance, 45mm cushion-shaped case.

• Modding Benefits: Known as the "Turtle" due to its unique case shape, this model offers a retro look that's great for modding. Its larger dial provides more space for creative modifications. The Turtle's classic design blends well with various mods, making it a versatile choice.

Seiko 5 Series

• Specifications: Various models with different specifications, often including automatic movement and water resistance ranging from 30m to 100m.

• Modding Benefits: The Seiko 5 Series is renowned for its vast array of styles and affordability. This range offers something for every modder, from sporty to dressy designs. The variety of sizes and styles provides countless opportunities for personalisation. It's a popular choice for those looking to create a unique piece that aligns with their specific tastes.

Tools You'll Need

Prepare these essential tools:

• Watch Case Opener

• Hand Removing Tool

• Tweezers

• Screwdrivers (Various Sizes)

• Movement Holder

• Magnifying Glass

• Spring Bar Tool

Common Parts Used and How to Mod Them

Bezels

Tools Required:

• Bezel Removal Tool

Process:

• Remove Old Bezel: Slip the bezel removal tool under the existing bezel and gently pry it off.

• Clean and Prepare: Clean the area and check for any damage.

• Install New Bezel: Align the new bezel and press it into place, ensuring a snug fit.

Hands

Tools Required:

• Hand Removing Tool

• Tweezers

• Hand fitting tool

Process:

• Remove Watch Hands: Use the hand-removing tool to pry the hands off the movement carefully. I’d recommend a dial protector for this process to avoid scratching or marking the dial. 

• Position New Hands: Utilize tweezers to place new hands onto the movement, aligning them properly. 

• Secure: Then, gently press these into place in the correct order using the hand-fitting tool. 
  

Straps

Tools Required:

• Spring Bar Tool

Process:

• Remove The Old Strap: Use the spring bar tool to compress the spring bars, releasing the strap. Depending on the lug type, they may have drilled lugs that make this easier.

• Attach New Strap: Insert new spring bars into the new strap, align it, and press it into place. 

Movement

Tools Required:

• Screwdrivers

• Tweezers

• Movement Holder

Process:

• Remove Existing Movement: Carefully extract the existing movement, handling it with tweezers. This will involve releasing the crown and stem. Each movement will have a slightly different process for this, so refer to that movement’s instructions.

• Prepare New Movement: Place the new movement in the movement holder.

• Install: Align the new movement and carefully set it into the case, securing as necessary.

Modding Process

Research

Understanding your Seiko watch model and desired modifications is crucial! ensuring parts are compatible will be fundamental to your project.

Open the Case

• Tools Required: Watch Case Opener

• Process: Carefully open the case to access the internals.

Remove Old Parts

• Tools Required: Hand Removing Tool, Tweezers

• Process: Utilize specialised tools to remove old components like hands, movement, etc.

Install New Components

• Tools Required: Tweezers, Screwdrivers

• Process: Carefully install new parts, aligning and securing them with precision.

Reassemble and Test

• Tools Required: Case Closer, Magnifying Glass

• Process: Reassemble your watch and thoroughly test all functions.

Professional Help

Know your limits, and don't hesitate to seek professional assistance if needed from a local watchmaker. Starting with a simple build or basic modifications to an old watch is a great place to start and can make the whole experience much less pressured. More complex builds can be undertaken as you become more comfortable and skilled. 

Conclusion

Seiko watch modding offers endless creative opportunities. Whether it's a new bezel or an entirely new movement, this guide should help you dive into the rewarding world of watch modding. Take things slowly, and you will enjoy the experience of fixing up a previously old watch or building something that is completely new from scratch in your personal style! 

Frequently Asked Questions (FAQ) about Seiko Watch Modding

Q: Is modding my Seiko watch difficult for a beginner?

A: Start simple and grow with experience. Think carefully about following a kit form watch with full Video instructions from DIY Watch Club for your first attempt. This is what I did, and this was a great first experience! You can read about that process here. 

Q: Will modding void my Seiko watch's warranty?

A: Likely. Understand your warranty first. And avoid modding expensive watches under warranty for your first attempt! Better to start with an old watch or even a dedicated kit from Diy Watch Club or NamokiMODS. 

Q: Where can I find parts for modding my Seiko watch?

A: Online retailers offer specialised parts. Places like NamokiMODS offer a full range of parts and tools required. Other places like DIY Watch Club offer full watch kits that are a great place to start your journey.

Read about DIY Watch Club and NamokiMODS

Q: Can I revert my watch back to its original state after modding?

A: It depends on the modification, but in most instances, things can be returned to normal. 

Q: What if I make a mistake while modding?

A: Start with a less expensive model and seek professional help if needed.

Q: Can I mod a vintage Seiko watch?

A: Yes, with specialised parts and care. Vintage watches may need different parts and tools, and some of these can be more difficult to obtain. Do your research before deciding on starting a project like this. 

Q: How long does it take to mod a Seiko watch?

A: Ranges from minutes to hours, depending on complexity. Swapping a strap or bezel can be quite quick, but a full build can take much longer, especially for someone new and inexperienced. Places like DIY Watch Club offer video tutorials that take you step by step through the various stages of a build. This can be a great way to learn!

Q: Is it more cost-effective to mod a Seiko watch or buy a new one?

A: Modding can be budget-friendly, but plan and budget accordingly. Mods can run into hundreds or can be very cheap with second-hand or discounted parts. Check out NamokiMODS for extensive parts that you can price to find your perfect build.

For more information on watch modding and Kit options and parts, check out:

• NamokiMods - great resources for parts and kits to build your dream watch - Use code MTR5 for 5% off your order!

• DIY Watch Club - A great starting place! they provide full build kits, including tools as well as full video tutorials to follow along and build these kits! - Use code MTRWATCHES for 5% off any order.