DATEJUST WATCH MOD COLLECTION

Explore Seiko Datejust Mod watches with Jubilee styling, two-tone finishes and distinctive dials.

Explore Seiko Datejust Mod watches with Jubilee styling, two-tone finishes and distinctive dials. Compare Wimbledon, Arabic and chocolate builds, then choose your size and configuration.

Seiko Datejust Mod — dial character for everyday wear

A Seiko Datejust Mod brings a dress-watch dial together with the presence of a bracelet watch. The choice starts with what you want to see on your wrist: a quiet black dial, green accents on a Wimbledon build, a warmer chocolate two-tone finish or the numeral pattern of an Arabic dial. Color and layout give each version a different place in an everyday rotation.

The design reference is the Rolex Datejust, with its date-window layout and familiar dress-sport proportions. These are independent ModTime custom builds, hand-assembled to order; ModTime is not affiliated with Rolex or Seiko. The confirmed Datejust builds here use an NH35 automatic movement with a date display.

Choose that function when you want a mechanical daily watch and a date you can check alongside the time. The movement is one part of the decision. A dial with Arabic numerals changes the pattern your eye follows, while a simpler marker layout lets the color do more of the work.

Jubilee bracelets on the listed Wimbledon, Black and Arabic Light Blue builds add a finer link pattern. Compare their actual photographs with the chocolate two-tone build to decide how much contrast you want between the dial and finish. Warm accents can make the same dress-sport idea feel more suited to an evening outfit.

Pick your dial direction, then compare the listed 36 mm, 39 mm and 41 mm sizes on the product page. Select the size and options you want before checking the displayed price. If a day-and-date calendar is your priority, explore the Day-Date-style ModTime collection alongside these date-only builds.

Choose your build

Useful buying guides

Frequently asked questions

Who builds these Seiko Datejust Mod watches?

ModTime hand-assembles these independent custom builds. The design is inspired by the Rolex Datejust; ModTime is not affiliated with Rolex or Seiko.

Which movement do the Datejust builds use?

The confirmed builds in this family use an NH35 automatic movement with a date display. Check the exact product specification before choosing.

How do I choose between Wimbledon and an Arabic dial?

Choose Wimbledon for its green-accent dial direction. Choose an Arabic dial when you prefer its numeral pattern, then compare the color and finish of the exact build.

Which case size can I select?

The Datejust product selectors list 36 mm, 39 mm and 41 mm. Choose your size on the product page and review that configuration before adding it to your cart.

What water-resistance options are available?

Choose standard 3 ATM or the paid 5 ATM option in the product selector. Check the selected size, options and displayed price together.

Need Help?

Frequently Asked Questions

What is a custom ModTime watch?

A ModTime custom watch is an independently assembled watch built from compatible components around a chosen movement, case, dial and bracelet.

The term "MOD" comes from "modification". These modifications are generally made for those who wish to personalize their watch according to their specific tastes or needs. Modifications can vary considerably, from minor aesthetic changes to more complex technical revisions.

What makes Seiko watches particularly amenable to modification is the wide availability of spare parts. This abundance of components enables a wide range of customization, making each ModTime custom watch unique.

Which movements do we use?

At ModTime, we work exclusively with reliable, high-grade Seiko movements — trusted by watch enthusiasts worldwide for their precision and durability.

Each movement is carefully selected and tested by our watchmaker to ensure optimal performance and a smooth mechanical experience.

We use:

  • NH34 Automatic — for our GMT Mods
  • NH35 Automatic — for date dial builds
  • NH38 Automatic — for clean dial designs without a date
  • VK63 Mecha-Quartz — for chronograph models


Every ModTime watch is powered by a movement chosen for its accuracy, longevity, and craftsmanship — the foundation of every timepiece we create.

Can I adjust the watch size myself?

Absolutely! Every ModTime timepiece comes with a FREE complimentary premium adjustment kit, allowing you to resize your bracelet easily and safely at home.

Each tool is designed for precision and comfort — the same way our watches are crafted.

If you prefer, your local watchmaker can also assist you with the adjustment — our bracelets use standard Seiko-compatible links, making professional resizing simple and effortless.

Can I choose a clean or dial-marked version?

Yes — absolutely! Every ModTime timepiece can be fully customized to match your personal vision.

If you prefer a clean, minimalist dial without visible dial branding, our watchmakers will assemble your piece accordingly during the hand-crafting process.

Simply include your preference in the order notes at checkout, and we’ll ensure your watch is built exactly the way you want it — refined, personal, and uniquely yours.

Can I design my own watch?

Absolutely. At ModTime, every timepiece can be crafted to your personal vision — from the bracelet and case to the dial, hands, and finishing details.

You can even add your own logo or initials, turning your watch into a truly one-of-a-kind creation.

If you’d like to design a fully personalized ModTime piece, simply reach out to us on WhatsApp. Our watchmakers will guide you through every step of the customization process — from concept to final assembly.

Shipping Time and Costs

Free tracked shipping to the US. Import costs are included; there are no import surcharges on delivery. See checkout for the final order total.

Each watch is hand-assembled within 4-6 days to ensure the highest quality and attention to detail.

Once completed, the shipping time is 7-12 days, depending on your location. While we aim for prompt delivery, some variations may occur based on the destination.

Please note: Due to the current global shipping conditions, especially related to parcel traffic in and out of the US, delivery times may occasionally be slightly extended. However, we do everything on our side to ensure the fastest possible handling and dispatch.

Please note that delivery times may vary depending on the destination country.

Are the watches water resistant?

ModTime watches use variant-dependent water-resistance options such as 3 ATM or 5 ATM. 3 ATM is intended for daily splashes and rain. 5 ATM gives more everyday margin, but custom watches should still be kept away from swimming, bathing, diving and prolonged water exposure unless a specific model is explicitly rated for that use.

No answer matches that yet. Try a broader word — or reach our watchmakers on WhatsApp and we’ll help directly.

Explore related collections: GMT watches · integrated bracelet watches · open heart watches · chronograph watches · watch travel cases · all watches

Questions before ordering? Read the ModTime FAQ or contact ModTime.