Spring Clearance Event
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Italian Naval Diving Homage | Various
Regular price $299.00 USDRegular price$499.00 USDSale price $299.00 USDSale -
Custom Nautilus Mod | Blue
Regular price $329.00 USDRegular price$449.00 USDSale price $329.00 USDSale -
Custom Nautilus Mod | Light Blue
Regular price $329.00 USDRegular price$449.00 USDSale price $329.00 USDSale -
Custom BB Chrono Mod Watch, Sky Blue
Regular price $299.00 USDRegular price$499.00 USDSale price $299.00 USDSale -
Custom Chronograph Mod | Blue / Silver
Regular price $299.00 USDRegular price$399.00 USDSale price $299.00 USDSale -
Custom Oak Mod | Solid Blue
Regular price $309.00 USDRegular price$449.00 USDSale price $309.00 USDSale -
Custom Oak Mod | Black
Regular price $309.00 USDRegular price$449.00 USDSale price $309.00 USDSale -
Custom Chrono Daytona Mod, GREEN
Regular price $299.00 USDRegular price$399.00 USDSale price $299.00 USDSale -
Custom BB Chrono Mod Watch, WHITE
Regular price $299.00 USDRegular price$499.00 USDSale price $299.00 USDSale -
Custom Build Aqua Terra Style Custom Mod Watch
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
Custom Mod Watch SKX019 Style 37mm - Rubber strap
Regular price $279.00 USDRegular price$399.00 USDSale price $279.00 USDSale -
Custom Explorer Mod Watch | Jigsaw Dial
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale
Assembled with Precision in the USA
Every Sunshine Custom Watch is meticulously hand-assembled by our master watchmakers in the heart of the USA. We combine heritage Seiko foundations with high-grade sapphire crystals and surgical-grade stainless steel to create timepieces built for artisanal excellence.
Sweeping Second Hand
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Classic Explorer Mod Watch, Black Dial | VH31
Regular price $279.00 USDRegular price$449.00 USDSale price $279.00 USDSale -
Custom Explorer Mod, Sky Blue | VH31
Regular price $279.00 USDRegular price$449.00 USDSale price $279.00 USDSale -
Custom Explorer Seiko Mod Watch | VH31
Regular price $279.00 USDRegular price$449.00 USDSale price $279.00 USDSale -
Date Just Custom Mod, Various Colors | VH31
Regular price $279.00 USDRegular price$399.00 USDSale price $279.00 USDSale -
Sub Custom Mod Watch, HULK | VH31
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
Custom Mod BB58 Scuba Master | VH31
Regular price $299.00 USDRegular price$499.00 USDSale price $299.00 USDSale -
Sub Custom Mod Watch - Black | VH31
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
Sub Custom Mod Watch - Smurf | VH31
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
Sub Custom Mod Watch - Blueberry | VH31
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
Sub Custom Mod Watch - Starbucks | VH31
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale
GMT Collection
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GMT Master Custom Mod (Vintage)
Regular price From $359.00 USDRegular price$499.00 USDSale price From $359.00 USDSale -
GMT Master Custom Mod | Vintage
Regular price $359.00 USDRegular price$499.00 USDSale price $359.00 USDSale -
GMT Explorer II Custom Watch
Regular price $359.00 USDRegular price$499.00 USDSale price $359.00 USDSale -
GMT Custom Mod Watch | White Pepsi
Regular price $359.00 USDRegular price$499.00 USDSale price $359.00 USDSale -
GMT GS Custom Mod Watch | Cream Dial
Regular price $359.00 USDRegular price$479.00 USDSale price $359.00 USDSale
Explore our most Popular Collections
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GMT Watches
GMT Seiko watch mods featuring the NH34A automatic GMT movement
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Submariners
Seiko custom Submariner mods, featuring the Japan NH35a automatic movements
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DateJust Style
Our DateJust Seiko mods, featuring 36 and 39mm sizes in stainless steel,...
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Yachtmaster
Yachtmaster collection of Seiko custom watch mods, featuring the Japan NH35a automatic...
Submariner Collection
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Custom Deep-Sea Diver Mod
Regular price $339.00 USDRegular price$399.00 USDSale price $339.00 USDSale -
Sub Custom Mod Watch (Black)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Sub Custom Mod Watch (HULK)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Sub Custom Mod Watch (Smurf)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Sub Mod Watch V2 (Smurf)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Custom Sub Mod Watch (White)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Sub Custom Mod Watch, HULK | VH31
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
Sub Custom Mod Watch - Black | VH31
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale
Chronograph Collection
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Custom Daytona Mod Watch | White Dial
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
Custom "Speedy" Mod Watch | Black / White
Regular price $299.00 USDRegular price$399.00 USDSale price $299.00 USDSale -
Custom "Speedy" Mod Watch | Black / Orange
Regular price $299.00 USDRegular price$399.00 USDSale price $299.00 USDSale -
Custom "Speedy" Mod Watch | Blue / White
Regular price $299.00 USDRegular price$399.00 USDSale price $299.00 USDSale -
Custom Daytona Mod Watch, Sky Blue
Regular price $299.00 USDRegular price$499.00 USDSale price $299.00 USDSale
Yacht Master Collection
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Custom Yacht Mod Watch | Blue Dial
Regular price $329.00 USDRegular price$399.00 USDSale price $329.00 USDSale -
Y40 Automatic Yacht Watch | White
Regular price $329.00 USDRegular price$449.00 USDSale price $329.00 USDSale -
T40 Rose Gold - Root Beer | Automatic
Regular price From $329.00 USDRegular price$429.00 USDSale price From $329.00 USDSale -
Custom Yacht Mod | Grey
Regular price $339.00 USDRegular price$399.00 USDSale price $339.00 USDSale
UNCOMPROMISING PRECISION IN CUSTOM HOROLOGY
We believe that a watch should be more than just a tool for telling time; it should be a reflection of individuality. Our boutique specializes in high-grade Seiko mods, where every component is hand-selected and every movement is calibrated with surgical precision to meet our exacting standards of excellence.
Can't find what you are looking for?
Looking for a different dial color for one of our models, a new case finish, or even a completely different mod you’ve seen elsewhere? As a full custom builder, we can create far more Seiko‑based mod styles than what’s shown on our site.If you have a vision—whether it’s a small tweak or a different style mod build—we’d love to bring it to life. Reach out anytime through our contact page and we’ll work with you to design a watch that fits your exact style.
Why choose a Sunshine Custom Watch Timepiece?
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High-Quality Products
At the Sunshine Custom Watch we believe that our customers deserve the best. That's why we only offer high-quality Seiko mod watches. Our products are carefully assembled in the USA to ensure that they are durable, functional, and stylish using only the finest components available.
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Easy Shopping Experience
We know that shopping for a Seiko Mod watch can be overwhelming, which is why we strive to make the process as easy as possible. Our website is user-friendly and easy to navigate, with detailed product descriptions and high-quality images. We also offer fast and reliable shipping options from the USA with most watches being shipping within two days.
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Exceptional Customer Service
We believe that great customer service is key to building long-term relationships with our customers. That's why we offer exceptional customer service, with a friendly and knowledgeable team available to help you with anything you need. We also offer a hassle-free return policy.
FAQ
What is a Mod Watch?
A Watch Mod is a custom-built timepiece made by modifying or replacing key components such as the dial, bezel, or hands to achieve a unique and personalized design.
At Mod Watch Co each watch is hand-assembled with care and precision, using premium parts inspired by iconic models, to deliver a timepiece that’s both distinctive and built to last.
What movements do you use?
We use genuine Seiko (TMI) movements. NH35/NH34/NH38 automatic and VK63 Quartz chronograph movements. These movements are renowned for their reliability. Each watch is carefully assembled in our workshop to ensure a unique product.
The Mod Watch Company are not affiliated with Seiko Inc. or any other Brand. Our timepieces are not replicas, they are fully customized timepieces built from aftermarket components.
What are delivery times?
Some of our most popular timepieces are in stock and are ready to ship the next business day. Assembly of your customized watch typically takes 2 business days, depending on demand. Once shipped, delivery times depends on the shipping method used.
Where are your watches made?
All our watches are assembled and tested in our workshop in Florida, USA.
Can I track my order?
An order confirmation will be sent out as the order is placed and processed. Once the order is ready to ship you will receive an email with tracking information.
Please check your spam or junk email folders before getting in touch.








































