TONA MOD | Steel Navy - 40mm
€299.00
incl. VAT, free insured shipping
- Movement
- VK63 Meca-Quartz
- Case
- 40 mm
- Crystal
- Sapphire Crystal
Your build:
Dial
14-day returns · Ships from Germany · 2-year warranty
Secure payment
Description
TONA MOD – Chronograph Style Watch
The TONA MOD is a custom-built chronograph-style watch designed for bold aesthetics and everyday reliability.
Powered by the genuine Seiko VK63 mecha-quartz movement, it delivers precise quartz timekeeping with a crisp, functional chronograph feel in a clean, sporty design.
Crafted from durable 316L stainless steel, the case and bracelet provide excellent corrosion resistance, long-term durability, and a refined finish. A sapphire crystal ensures strong scratch resistance and clear legibility, making the TONA MOD a reliable daily-wear watch with a classic chronograph look.
An automatic NH35 option is available for customers who prefer an automatic movement. Please note that when the automatic option is selected, the chronograph and subdials are decorative and non-functional.
Key Features
• Genuine Seiko VK63 mecha-quartz chronograph movement
• Fully functional chronograph (VK63 version)
• Automatic NH35 option available
• Chronograph not functional with automatic option
• 316L stainless steel case and bracelet
• Sapphire crystal, scratch-resistant
• Adjustable stainless steel bracelet
• Free bracelet adjusting tool included for easy at-home sizing
Specifications
• Case diameter: 40 mm (excluding crown)
• Thickness: approx. 12 mm
• Movement: Seiko VK63 Mecha-Quartz
• Crystal: Sapphire (anti-scratch)
• Bracelet: 316L stainless steel, adjustable (approx. 14.5 cm – 22 cm)
• Water resistance: 5 ATM
Components & Materials
• Case: 316L Stainless Steel
• Bracelet: 316L Stainless Steel
• Crystal: Sapphire
• Movement: Seiko VK63 Mecha-Quartz or Seiko NH35 Automatic
Build, QC & Shipping
Each watch is assembled, checked, and quality-controlled before shipping to ensure proper function and finish.
We offer international free tracked and secured shipping. Shipped from Germany: within the EU taxes are included and no customs duties apply; for deliveries outside the EU, import charges of the destination country may apply. Delivery times may vary depending on destination and order volume.
A free bracelet adjusting tool is included to allow quick and easy sizing at home.
Important Notice (Automatic Option)
When the automatic NH35 movement is selected, the chronograph pushers and subdials are decorative only and do not function as a chronograph.
Disclaimer
This is an independently built custom mod watch assembled with aftermarket components and a genuine Seiko movement. It is not an original product of any other watch manufacturer and is not affiliated with, sponsored by, or endorsed by any third-party brand. All trademarks belong to their respective owners.
Specifications
- Movement
- VK63 Meca-Quartz
- Case
- 40 mm
- Crystal
- Sapphire Crystal
- Material
- 316L Stainless Steel
- Caseback
- Transparent Caseback
- Bezel
- Fluted Bezel
Shipping & returns
Every watch is hand-assembled, regulated and inspected after your order. Delivery usually takes 12–15 days — with Priority Build (€10, selectable at checkout) your watch moves to the front of the bench. Insured shipping with tracking from Germany. 14-day returns and a 2-year movement warranty.
FAQ
- What is a Seiko mod?
- A Seiko mod is a modified watch that uses an authentic Seiko movement, combined with third-party high-quality parts. Most of our watches come in stainless steel with sapphire crystal.
- How long will it take to receive my watch?
- When you place an order, your watch is hand-assembled, regulated and inspected after purchase. Total delivery usually takes 12–15 days. With Priority Build (€10) your watch moves to the front of the bench — this does not promise an earlier delivery date.
- Can I customize the logo or remove it?
- Absolutely. Send us an email with your order number and full name after ordering, stating your desired design or that you want to remove the logo. You can also leave a note at checkout, or contact us before ordering.
MedoMods is an independent maker and is not affiliated with or endorsed by Seiko, Rolex, Patek Philippe, Audemars Piguet or any other brands mentioned. Third-party model names are used descriptively (homage style) only.
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TONA MOD | Steel Navy - 40mm
€299.00 · With logo