A G-TUNE Mod Watch starts as an authentic, brand-new Casio G-Shock and is hand-rebuilt with premium aftermarket parts — including full stainless steel cases, brushed metal bracelets, and custom dials. The result is a luxury-looking timepiece that retains all the toughness of the original G-Shock.

Yes, 100%. Every G-TUNE mod starts with a genuine, brand-new Casio G-Shock purchased directly from official sources. We never use counterfeit or grey-market watches. Your mod comes with the original box, papers, and warranty card.

No. G-TUNE is an independent workshop specializing in premium G-Shock customizations. We are not affiliated with Casio or the G-Shock brand. All customizations are performed by us after purchasing authentic Casio watches.

The modification process may affect the original water resistance rating. While premium parts are used, we recommend treating your modded G-Shock with the same caution as any luxury watch and avoiding submersion. If water resistance is critical to you, please contact us before ordering.

We primarily work with the GA-2100 (CasiOak) series, which is the most popular base for premium mods due to its iconic octagonal case shape. We also work with select other models. Check our Mod Watches collection for all available options, or use the Watch Configurator to build your own.

Our Watch Configurator lets you choose your preferred dial color, bracelet finish, and case style to build a completely unique watch. Once you submit your configuration, our team hand-builds it to your exact spec and ships it to you.

Custom-configured watches typically take 5–10 business days to build before shipping, as each one is assembled by hand. You’ll receive a confirmation email with an estimated timeline after placing your order.

Yes! We sell premium bands and bracelets separately in our Bands for Mods collection. Available in Full Steel, Rubber & Steel, and specialty fits for different G-Shock models. Make sure to check compatibility with your model before ordering.

Yes. All G-TUNE Mod Watches retain the original Casio G-Shock international warranty (2–3 years depending on country). Your package includes the original warranty card and documentation. To activate the warranty, you can send us the watch and we’ll handle it — you’ll just need to cover shipping and include the original band, watch, and box. For more info: world.casio.com/support/warranty.

Every G-TUNE Mod Watch order includes:

• The G-Shock Mod Watch (assembled with premium parts)
• Original G-Shock bracelet or dial (your choice)
• Original G-Shock box & warranty documentation
• G-TUNE stickers and disassembly tools

To attempt a warranty claim, you would need to reinstall the original dial ring (included in your package) using the provided tools. However, please note that Casio may not accept the claim if the watch has been opened. G-TUNE is not responsible for warranty decisions made by Casio.

We ship from Portugal. Delivery to the US typically takes 7–14 business days. International shipping times vary by destination. All orders are shipped with tracking so you can follow your package every step of the way.

As soon as your order is shipped, you’ll receive a tracking number via email. You can also track your order anytime at g-tune.com/apps/track123.

Yes! We offer free shipping on all orders over $350. Orders below this threshold have a flat shipping rate applied at checkout.

Yes, we ship worldwide. Shipping costs and delivery times vary by destination and will be calculated at checkout. If you have a question about shipping to your specific country, feel free to contact us.

We offer a 14-day return policy. If you’re not satisfied with your purchase, contact us within 14 days of receiving your order. The watch must be returned in its original condition, with all included items. Custom-configured watches may be subject to different return conditions — please contact us to discuss.

We accept all major payment methods including Visa, Mastercard, American Express, PayPal, and Shop Pay. All transactions are processed securely at checkout.

Yes! First-time customers receive 5% off their order. The discount is applied automatically — no code needed. You can also take advantage of our current 15% off promotion on all custom watches.