Seiko modding is the art of customizing Seiko watches by modifying components such as the dial, hands, bezel, case, and bracelet. These modifications create a unique, personalized timepiece tailored to individual preferences, giving you a one-of-a-kind watch built on the reliable foundation of a Seiko movement.

A Seiko Mod watch is essentially a customized version of a standard Seiko watch. The term "MOD" comes from "modification," reflecting the changes made to personalize the watch according to specific tastes or needs. Modifications can range from minor aesthetic adjustments to more intricate technical revisions, ensuring that every Seiko Mod is as unique as its owner.

What makes Seiko watches particularly popular for modding is the abundance of compatible spare parts, enabling an extensive range of customization. This wide availability of components allows modders to craft truly distinctive timepieces with nearly endless design possibilities.

A Seiko Mod is a hand-assembled timepiece built from a prestigious Seiko automatic movement, combined with high-quality aftermarket parts, often made from premium materials like 316L stainless steel. These modifications elevate the aesthetic and performance of the original watch while maintaining its renowned reliability.

For those who have ever dreamed of owning their ideal watch, Seiko modding makes it possible. By using premium materials such as sapphire crystal and ceramic bezels, Seiko mods bring the elegance of luxury watch designs to a broader audience. Unlike counterfeit products, these timepieces offer both authenticity and craftsmanship, delivering a bespoke experience for watch enthusiasts who value quality and individuality.

No, we are not affiliated with Seiko. While we specialize in crafting custom Seiko mods, our watches are independent creations using Seiko's original movements combined with high-quality aftermarket parts. Our goal is to offer unique, personalized timepieces inspired by Seiko’s reliable foundations, but we operate separately from the Seiko brand itself.

As for the legality of watch modding, it is widely accepted within the watch community, especially for brands like Seiko. Unlike more exclusive brands such as Rolex, where modifications can be restricted or frowned upon, modding Seiko watches is a recognized culture that encourages creativity and personalization. Our mods are created in compliance with industry standards and regulations, offering a safe and legal way to enjoy custom timepieces.

At Muzi Watches, we specialize in crafting high-quality, personalized Seiko mods with meticulous attention to detail. Our watch mods are designed with a perfect blend of premium aftermarket parts sourced from Japan and Authentic Seiko movements, ensuring exceptional quality and durability. Each timepiece is assembled by professional watchmakers, with more than +7 years experience combining expert craftsmanship with your unique vision to create a truly one-of-a-kind accessory. We are committed to delivering watches that not only meet but exceed your expectations.

If you're unsure about which case diameter to order, we recommend measuring your wrist with a rope for the best fit.

• For wrists under 17.5cm (6.9"), we recommend a 36mm case.
• For wrists above 19.5cm (7.7"), a 39mm/40 mm and above case would be ideal.
• For wrists in between, both sizes can suit you well—choosing between a larger or smaller watch face ultimately depends on your personal preference. You can also have a look on our Size & Fit Guide.

Yes, every watchbox includes a professional bracelet adjustment tool, allowing you to easily resize your watch bracelet for the perfect fit. This ensures that you can make quick and convenient adjustments without the need for additional tools or assistance.

An automatic movement, also known as a self-winding movement, powers the watch through the natural motion of your wrist. As you wear the watch, a rotor inside the movement spins and transfers energy to a mainspring, which stores and releases power to keep the watch running. This eliminates the need for batteries and ensures consistent timekeeping as long as the watch is worn regularly or manually wound when not in use. Most of our watches do have transparant backcases which allows you to see the movement winding.

At Muzi Watches, every timepiece is meticulously hand-assembled in our state-of-the-art workshop located at Prinsengracht 855, 1017 KB Amsterdam, Netherlands. Our facility is equipped with advanced tools and technology, enabling our highly skilled watchmakers to perform precise craftsmanship and thorough quality control. With over 7 years of expertise in watchmaking, we pride ourselves on creating custom Seiko mods that meet the highest standards of excellence. From design to final assembly, each watch is carefully constructed by professionals who ensure every detail is flawless, delivering you a timepiece of exceptional quality and precision.

We offer a variety of Seiko models for customization, including the popular Royal Oak, DateJust, Nautilus and GMT, Submariner and others. Visit our website to view the latest available models and customization options and contact us via sales@muziwatches.com to make an inquiry and we'll see what we can design for you.

We use reliable Seiko automatic movements, including the NH34, NH35, NH36, and NH38, NH70 known for their durability and precision.

At Muzi Watches, we understand that purchasing a custom timepiece is more than just buying a watch—it's an investment in quality, craftsmanship, and personal style. That’s why all our Seiko mods come with a 6-month limited warranty covering defects in movement and craftsmanship. This gives you peace of mind, knowing that your watch is protected and built to last.

For those who want even greater confidence in their purchase, we offer the option to extend the warranty to 1 or 2 years, ensuring long-term security and satisfaction. Your timepiece isn’t just a tool to tell time; it’s a reflection of your individuality and a trusted companion for years to come. Explore our Warranty Policy to discover how we stand behind our craftsmanship—because your trust means everything to us.

Our watches come with a water resistance rating of 50 mm (5 ATM), suitable for daily wear and light splashes. However, we do not recommend swimming or bathing with our watches.

Avoid exposure to extreme temperatures and water beyond the stated resistance level. Clean your watch regularly with a soft cloth, and store it in a protective case when not in use.

We proudly offer international shipping to a wide range of countries. For orders above €100, we provide free premium shipping, ensuring your purchase arrives securely and in a timely manner. We can say that every watch takes 2 weeks until completion of assembly in our workshop.

Regarding Shipping times may vary depending on your location. Check out our shipping policy.

For watches in our standard collection (non-customized), we accept returns within 30 days of delivery, provided the item is in its original condition, unused, and with all packaging intact. Shipping costs for returns may apply.

Regarding our customized watches on personal request, returns and exchanges are not accepted for these items. However, if there is an issue related to craftsmanship or movement defects, please contact us immediately, and we will assist you under our 6-month Muzi Warranty policy.

We recommend reviewing our detailed Returns & Warranty Policy for more information. If you have any questions or concerns, don’t hesitate to reach out to our customer support team.

Once your order has been shipped, you will receive an email containing your tracking number, allowing you to monitor its progress in real-time. If you don’t see the email in your inbox, please check your spam or junk folder. Alternatively, you can also track your order directly on our website by visiting the Track Your Order page for the latest updates.

We accept major credit cards, PayPal, Visa and other secure payment options. Check our website for the most up-to-date payment methods.

Customization fees vary based on the components you choose. The total cost is displayed at checkout before you confirm your order.

You can reach our customer support team through our contact form or by emailing us at support@muziwatches.com or on whatsapp +31628207370 We strive to respond to all inquiries within 24 hours.

Yes, we encourage you to browse customer reviews on our website to hear what other Seiko mod enthusiasts have to say about their experience with Muzi Watches and check out our social media channels for customer shots an other reviews.

Yes, post-purchase modifications are available. Contact us to discuss the options and associated fees for upgrading or altering your watch.

Yes, we provide wholesale pricing for retailers and businesses ordering 10 or more units. Contact us directly for more information.