Mod Submariner - Card
Master Green

“Seiko mod” describes a custom watch assembled around a Seiko-family movement and a chosen combination of components. The dial, case and strap or bracelet define the finished design. Read this product’s specifications for the fitted movement and components.

Wrist movement winds the automatic mechanism during wear. You can also wind it manually. If it stops after time off the wrist, wind and set it before wearing it again.

Open our DIY builder to explore the available combinations. The options and final price are shown there; entering the builder does not automatically carry over this product’s configuration.

Case size is only part of the fit. Compare the case dimensions, the distance across the lugs and the strap or bracelet with a watch you already enjoy wearing. Tell us your wrist measurement and preferred fit, and we can help you compare the available options.

Delivery depends on the build and destination. Contact us for an estimate before ordering for a specific date. Preparation and carrier transit are separate stages. Check the shipping policy for the current terms.

Eligible standard watches can be requested for return within 30 days of receipt if unused, unworn, with tags and original packaging. Clearance items are final sale. A $15 processing deduction applies, and customers cover return shipping for non-quality issues. Request authorization before sending anything back.

Follow the operating guide for the fitted movement. Avoid using the quick-set calendar while its changeover mechanism is engaged; if you are unsure, ask us for the correct setting steps before adjusting it.

This configuration uses a sapphire crystal, chosen for its clarity and scratch resistance. Scratch resistance does not make it scratch-proof or protect it from every impact. A ceramic bezel frames the dial. The metal bracelet completes the configuration shown.

Check the water-resistance guidance for the exact configuration before exposing the watch to water. We do not recommend showering or swimming without that confirmation. Water ingress is excluded from the current warranty. Keep the watch away from hot water, steam and chemicals. Avoid using the crown or chronograph pushers while the watch is wet.

Check the product’s included-items list for the packaging and accessories supplied with this configuration. If you are buying it as a gift or need a particular accessory, contact us before ordering.

This video shows a representative build from this series. Its color and component choices may differ from this watch; it is not footage of your individual order. Any AI-generated product film is labeled as a visualization and should not be used to judge manufacturing steps or exact physical details.

Customized and DIY orders are non-returnable unless a confirmed movement or assembly defect is identified. Contact us with your order details if there is a problem, and wait for authorization before returning the watch.

The current policy provides a one-year warranty, with exclusions for water ingress, accidental damage, unauthorized repairs and normal wear. Movement replacement carries a $30 labor fee. Contact us for the applicable service and shipping costs before sending your watch.

Contact us as soon as possible with your order number and requested change. We will confirm whether it can still be accommodated based on the status of the order; changes and cancellation are not guaranteed.

Email support@usamodwatch.com with your order number, a description of the issue and clear photographs or a short video where useful. Contact us before sending the watch anywhere so we can provide the correct service or return instructions.