Seiko Mod Datejust Round Gray
Seiko Mod Datejust Round Gray
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Seiko Mod Datejust Roman Edition – Classic Elegance, Modern Character
The Seiko Mod Datejust Roman Edition fuses timeless elegance with a cultured twist, featuring Roman numerals for a refined and unique aesthetic.
Available in 40mm, its 316L stainless steel case offers comfort and durability. Powered by the reliable Seiko NH35 automatic movement with a 41-hour power reserve, it’s designed for precision and long-lasting performance.
With 10 ATM water resistance, a polished fluted bezel, scratch-resistant sapphire crystal, and a transparent case back, this watch blends sophistication with everyday practicality. The screw-down crown enhances durability, while a 12-month warranty ensures peace of mind.
Features
- Diameter : 36/40 mm
- Thickness : 12 mm
- Waterproofing: 10 ATM
- Movement : Seiko NH35 automatic
- Power reserve: 41 hours
- Dial: Datejust
- Bezel: Smooth round in polished steel
- Case back: Transparent
- Glass : Sapphire
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Warranty: 2 years
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Delivery: Free, in 4-6 working days with Canada Post.




FAQ
What is a Seiko Mod?
A Seiko Mod is a customized watch built around a genuine Seiko automatic movement, fitted with custom parts like the dial, bezel, hands, and more.
At Maison Arclay, each model is hand-assembled in France, offering unique designs you won’t find in the official Seiko catalog—while maintaining the reliability and precision of the NH35 movement.
What are the delivery times?
Our watches are made in France, then shipped from our warehouse in Ottawa to ensure fast delivery.
Expect an average of 4 to 6 business days for delivery once shipped via Canada Post.
Can I return my order ?
Yes, you have 14 days after receiving your watch to return it if it doesn’t suit you.
The item must be unworn, in perfect condition, and in its original packaging. Please contact us through our form or by email to request a return label.
Is the watch water-resistant?
Yes, our watches are highly water-resistant, with a rating of up to 10 ATM (100 meters).
They can be worn in the rain, in the shower, or even while swimming.
Is the watch under warranty?
Yes, all our watches come with a 2-year warranty covering the automatic movement and any manufacturing defects. If you experience any issues, our customer service team is here to provide a quick and effective solution.