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TONA MOD | Steel White - 40mm

€289.00

incl. VAT, free insured shipping

Available — assembled & regulated for you
Seiko Movement Sapphire Crystal 316L Steel
Ships in 7–10 business days

Your build:

Dial

1

14-day returns · Ships from Germany · 2-year warranty

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14-Day Returns

Money-back guarantee

Adjustable Strap

Fits all wrists

2-Year Warranty

For worry-free wear

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. Taxes and customs duties are included, with no additional fees on delivery. 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
NH35 Movement
Crystal
Sapphire Crystal
Material
316L Stainless Steel
Caseback
Transparent Caseback
Bezel
Fluted Bezel
Shipping & returns

Every watch is hand-assembled to order and ready to ship in 7–10 business days. Insured shipping 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, we order the parts for your design right away. The entire process usually takes about 20 days: parts normally arrive within 2–3 weeks (including weekends). When we receive the parts, we build the watch the same day and ship it as soon as possible after assembly. Watches in stock from time to time ship faster.
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 White - 40mm

€289.00 · With logo

2-Year Warranty
14-Day Returns
Ships from Germany
Secure Checkout