water resistant 3ATM
For daily worry-free wear
LIMITED EDITION CUSTOM SEIKO MOD WATCHES
Elevated Timepieces & Seiko Mods
At Circa Watch Labs, we believe a watch is more than a way to tell time—it’s a reflection of character and taste. Our exclusive Seiko Mods feature premium Seiko TMI movements and other Japanese calibres.
Each piece can be personalized with custom dial logos or engraving, offering a distinctive alternative to wearing your retail watch.
AUTOMATIC | HAND ASSEMBLED
BUILT FOR YOUR STYLE
WANT TO BUILD YOUR OWN WATCH?
STEP 1
Use our watch builder tool 🔧
Design your dream watch with our configurator for a unique experience. Contact us if you need assistance!
WATCH BUILDER TOOL
STEP 2
Time to build it ⏳
Customize your watch with your unique concept, it may takes 3-5 for simple or 7-12 working days for intricate designs. We test to ensure everything works smoothly.
STEP 3
Patience is a virtue 🛩️
Finally after curating your watch, we will hand it to our shipping partner. This generally takes 7-12 working days to arrive!
WATCHES OF THE MONTH
Shop the look
Shop the look
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Need help?
Frequently Asked Questions
Yes, we offer a 1-year in-house guarantee on the movement of our watches. However, if the watch is altered in ways that affect the movement, such as changes to the crown, glass, or bezel which impact and touch the movement, the warranty may then become void.
All of our Seiko watch mods use authentic Seiko TMI movements. The external mod parts like cases, bezels, and dials are high-quality aftermarket components selected to ensure both durability and a premium finish. Some of our other watches use Miyota or other Japanese movements
The entire process from assembly to shipping takes about 3-5 days sooner if the parts are in stock for your watch. Once your watch is assembled and your order is processed, which typically takes 3-5 days, it is shipped out by our shipping partners and usually arrives within 7-12 working days.
Our Seiko watch mods are assembled with precision and care to ensure water resistance under standard daily conditions. However, we recommend avoiding full submersion or high-pressure water exposure, as modded parts may vary in resistance from factory Seiko standards.
If you experience any issues with your Seiko watch mod, please contact us through our website's contact form with your order # or through our customer service chat. If the problem pertains to the movement and falls under our guarantee, we will arrange a replacement. For other unrelated issues, transport costs may be applied.
We accept various payment methods including Apple Pay, Google Pay, and most major debit and credit cards such as Visa, Mastercard, AMEX, Discovery and JBC.
We deliver to most countries worldwide, except North Korea, North Africa and Russia. We offer free shipping with our shipping partner's in HK, ensuring that your watch reaches you securely.
At CIRCA WATCH LABS, we offer a variety of Seiko mod styles for sale such as DAYDATE, NAUTILUS, DATEJUST and SANTOS MODS. Each watch is made using Seiko TMI movements and can be customized with various aftermarket dials, bezels, and straps to suit your needs.