New Arrivals
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SaleSeiko Mod BB58 Scuba
Regular price $349.00 USDRegular price$499.00 USDSale price $349.00 USDSale -
Custom Explorer Seiko Mod Watch, Scuba Master
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
GMT GS Seiko Custom Mod Watch (Ice Blue)
Regular price $359.00 USDRegular price$479.00 USDSale price $359.00 USDSale -
Royal Oak Seiko Mod | Black
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale -
GMT Meteorite Seiko Custom Mod (Pepsi)
Regular price $359.00 USDRegular price$499.00 USDSale price $359.00 USDSale
GMT Collection
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GMT GS Seiko Custom Mod Watch
Regular price $359.00 USDRegular price$479.00 USDSale price $359.00 USDSale -
GMT Explorer II Seiko Custom Watch
Regular price $359.00 USDRegular price$499.00 USDSale price $359.00 USDSale -
GMT Master Seiko Custom Mod (Bruce Wayne)
Regular price $359.00 USDRegular price$499.00 USDSale price $359.00 USDSale -
GMT GS Seiko Custom Mod Watch (Ice Blue)
Regular price $359.00 USDRegular price$479.00 USDSale price $359.00 USDSale -
GMT Master Seiko Custom Mod (Batman)
Regular price $359.00 USDRegular price$499.00 USDSale price $359.00 USDSale
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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Seiko Sub Custom Mod Watch (Black)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Seiko Sub Custom Mod Watch - Black
Regular price From $329.00 USDRegular price$449.00 USDSale price From $329.00 USDSale -
Sold outSeiko Custom Mod Watch, Rootbeer
Regular price $349.00 USDRegular price$449.00 USDSale price $349.00 USDSold out -
Seiko Sub Mod Watch V2 (Vintage)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Seiko Custom Mod Watch (Two Tone Black)
Regular price $349.00 USDRegular price$449.00 USDSale price $349.00 USDSale -
Seiko Gold Custom Mod Watch, Black
Regular price $349.00 USDRegular price$449.00 USDSale price $349.00 USDSale -
Seiko Sub Custom Mod Watch (HULK)
Regular price $339.00 USDRegular price$449.00 USDSale price $339.00 USDSale -
Seiko Sub Custom Mod Watch - Smurf (VH31)
Regular price $299.00 USDRegular price$449.00 USDSale price $299.00 USDSale
Chronograph Collection
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Custom Seiko "Speedmaster" Mod Watch, Black / Orange
Regular price $299.00 USDRegular price$399.00 USDSale price $299.00 USDSale -
Custom Seiko Daytona Mod Watch, Rose Gold
Regular price $329.00 USDRegular price$439.00 USDSale price $329.00 USDSale -
Custom Seiko Daytona Mod Watch, Mid Blue
Regular price $329.00 USDRegular price$499.00 USDSale price $329.00 USDSale -
Custom Seiko Daytona Mod Watch, White Dial
Regular price $329.00 USDRegular price$449.00 USDSale price $329.00 USDSale -
Custom Seiko BB Chrono Mod Watch, Sky Blue
Regular price $329.00 USDRegular price$499.00 USDSale price $329.00 USDSale
Yacht Master Collection
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Yacht-Master Seiko Custom Mod Watch, Black
Regular price $339.00 USDRegular price$399.00 USDSale price $339.00 USDSale -
Yacht-Master Seiko Custom Mod Watch, Black
Regular price $339.00 USDRegular price$399.00 USDSale price $339.00 USDSale -
Yachtmaster Seiko Custom Mod Watch, Grey
Regular price $339.00 USDSale price $339.00 USDSale -
Yachtmaster Seiko Custom Mod Watch, Blue
Regular price $339.00 USDSale price $339.00 USDSale -
Yacht-Master Seiko Custom Mod Watch, Gold
Regular price $349.00 USDRegular price$449.00 USDSale price $349.00 USDSale
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 you 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.






















