




Seiko Mod Oyster | Yellow

Watch Box & Adjustment Tools Included
Hand-Assembled & Ready to Wear — No Parts to Install


Watch Specifications
The Seiko Mod Oyster Yellow is a bold and refined custom Seiko Mod, crafted for those who value clean design, precision, and character. Assembled by hand, this watch is built to stand out without excess.
Each Seiko Mod Oyster Yellow features premium materials like 316L stainless steel, anti-reflective sapphire crystal, and a reliable automatic movement. Its distinctive styling, inspired by iconic silhouettes, makes it a perfect daily companion for those who want more than a generic timepiece.
Seiko Mod Oyster Yellow – Features
- Case: 316L stainless steel – FB 39 mm
- Thickness: 12.5 mm
- Dial: 28.5 mm – Sunburst yellow
- Crystal: Sapphire without magnifier, anti-reflective coating
- Case back: Sapphire (daily wear)
- Crown: Screw-down
- Hands: Green luminous baton – Luminova
- Bracelet: Jubilee – 20 mm width
- Wrist size: Adjustable from 14.5 to 22 cm (sizing tool included)
- Water resistance: Up to 100 m
Each Seiko Mod Oyster Yellow is hand-assembled with care and tested for long-term performance. Built to last. Worn with intent.
Assembled by hand. Built just for you.
Japanese Movement – Seiko Automatic
Mouvement : Seiko NH35a Automatic Mechanical
Fonctions :
- Automatic winding
- Hacking seconds
Power Reserve: 41 hours on full charge
Jewels: 24
Shipping & Delivery Times
Risk-Free Guarantee
If you’re not satisfied with your watch, you can return it within 30 days. This guarantee starts from the moment your package is delivered.
Assembly
It takes 3 to 5 business days to assemble and test your watch, ensuring optimal performance.
Shipping
Once assembled, your watch will be shipped, which typically takes 8 to 12 business days.
Overall Timeline
The entire process, from assembly to delivery, takes approximately 10 to 15 business days (Monday to Friday). This ensures every watch meets our high standards before reaching you.
Cost
Shipping is completely free.
Enjoy a worry-free experience with guaranteed quality and service!
Choose options





Wear the exceptional. Without the luxury price.
Every Chrono Mod watch is hand-assembled and inspired by legendary timepieces — giving you the look, feel, and presence of luxury, without the markup.
The secrets of your watch


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.