
Horological Precision
At Chrono Mod, every watch is powered by a Seiko movement, renowned for its reliability and precision.
We use automatic calibers such as the NH34, NH35, NH38, NH70, and NH72, selected for their superior timekeeping and long-term performance.
For quartz models, we rely on the VK63 hybrid movement, combining electronic precision with mechanical feel.
Each movement is meticulously tested and inspected prior to assembly to ensure flawless operation.
Our expert watchmakers guarantee that every watch meets the highest standards of horological excellence.
Featured collection
Our models
CRAFTING YOUR TIMEPIECE
THE PROCESS
1. DESIGN YOUR VISION
From our exclusive catalogue or our intuitive configurator, every Chrono Mod watch begins with a choice that reflects your personal taste. Select every element — from the dial to the case — and craft a timepiece that tells your story.
2. WE PREPARE YOUR COMPONENTS
Once your order is confirmed, our team sources and prepares each component with meticulous attention. From Seiko movements to custom bezels and dials, every part is handpicked to ensure mechanical harmony and visual perfection.
3. WE ASSEMBLE YOUR WATCH
Your watch is carefully hand-assembled in our French workshop. Each movement is tested, each component aligned with precision. Our watchmakers ensure your timepiece meets the highest standards — ready to stand the test of time.
4. YOUR TIMEPIECE, DELIVERED
After final inspection, your watch is packaged in a sleek Chrono Mod box, accompanied by adjustment tools and care instructions. Delivered securely, ready to be worn. You now own a unique piece — designed by you, built by us.

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Need help?
FREQUENTLY ASKED QUESTIONS
A Seiko mod is a one-of-a-kind timepiece, custom-made and impossible to find in traditional retail stores.
Handcrafted by experts, these watches combine original Seiko components with carefully selected non-Seiko parts, chosen for their quality and style.
Please note that these are not official Seiko products. Our company is entirely independent and has no affiliation with Seiko or any other brand.
We use NH35, NH70, and NH72 automatic mechanical movements for our modified Seiko watches. These movements, manufactured by Seiko, are renowned for their reliability and accuracy, providing an exceptional watchmaking experience for our customers. Each of these movements is carefully selected to ensure long-lasting performance and outstanding quality, adding invaluable value to our modified Seiko watches.
Each watch undergoes a series of rigorous tests to ensure its performance and reliability:
- Water Resistance: A thorough check of the water resistance to ensure perfect sealing.
- Demagnetization: A demagnetization process to preserve the proper functioning of sensitive components.
- Chronometer Adjustment: Precise adjustment of the watch to achieve accuracy within -5 to +5 seconds per day.
These quality checks are carried out with care before shipping, ensuring you receive a watch that is ready to use, reliable, and high-performing.
For every order, we provide you with the necessary tool to adjust the bracelet to your wrist yourself.
This allows you to easily customize the fit at home, at no extra cost.
Delivery of In-Stock Watches
- Shipping within 48 business hours.
Delivery of Made-to-Order Watches
- Assembly: 10 to 15 business days.
- Shipping within 48 hours.
Accessory Delivery
- Shipping within 48 business hours.
Tracking and Shipping Fees
- Tracking number provided upon shipment.
- Shipping fees vary based on weight and destination.
Returns and Exchanges
- Please refer to our Return Policy.