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3/5 ATM WATER RESISTANCE SCRATCH-RESISTANT SAPPHIRE CRYSTAL 904L STAINLESS STEEL SEIKO MOVEMENT 12-month warranty FREE US SHIPPING · NO IMPORT FEES
3/5 ATM WATER RESISTANCE SCRATCH-RESISTANT SAPPHIRE CRYSTAL 904L STAINLESS STEEL SEIKO MOVEMENT 12-month warranty FREE US SHIPPING · NO IMPORT FEES
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    ModTime
    • SHOP BY STYLE
      • GMTEIKO
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    • POPULAR BUILDS
    • HOW WE BUILD
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    • ABOUT MODTIME
      • ABOUT MODTIME
      • OUR STORY
      • WHY MODTIME
      • NO BRAND AFFILIATION
      • OUR STANDARD
      • CUSTOMER SUPPORT
      • FAQ
      • CONTACT
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    • Free US shipping
    • No import fees
    • 14-day returns
    • 12-month warranty
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    SHOP BY STYLE

    Compare the core ModTime watch styles by case shape and feel, then open the collection that matches how you want your watch to wear. Shopping for a fourth-hand GMT? Start with our GMT watches collection for NH34-powered builds. Need help choosing? Read the FAQ or contact us.

    • Nautilus Watch Mod Collection

      NAUTILUS WATCH MOD COLLECTION

      Explore Seiko Nautilus Mod builds with open-heart, chocolate and Tiffany-blue dials. Start...

      NAUTILUS WATCH MOD COLLECTION

    • Royal Oak Watch Mod Collection

      ROYAL OAK WATCH MOD COLLECTION

      Explore Seiko Mod Royal Oak builds with an octagonal bezel and an...

      ROYAL OAK WATCH MOD COLLECTION

    • GMT WATCH MOD COLLECTION - ModTime

      GMT WATCH MOD COLLECTION

      Explore Seiko GMT Mod (NH34) builds for keeping another time zone in...

      GMT WATCH MOD COLLECTION

    • Daytona Watch Mod Collection

      DAYTONA CHRONOGRAPH WATCH MOD COLLECTION

      Explore Seiko Daytona Mod chronographs with panda dials, rose-gold-tone finishes and VK63...

      DAYTONA CHRONOGRAPH WATCH MOD COLLECTION

    • Santos Watch Mod Collection

      SANTOS WATCH MOD COLLECTION

      Seiko Santos Mods — square-case builds. Your watch comes with a 12-month...

      SANTOS WATCH MOD COLLECTION

    • Datejust Watch Mod Collection

      DATEJUST WATCH MOD COLLECTION

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

      DATEJUST WATCH MOD COLLECTION

    • Submariner Watch Mod Collection

      SUBMARINER WATCH MOD COLLECTION

      Explore Seiko Submariner Mod builds with a dive-watch silhouette, NH35 automatic movement...

      SUBMARINER WATCH MOD COLLECTION

    • Aquanaut Watch Mod Collection

      AQUANAUT WATCH MOD COLLECTION

      Explore Seiko Aquanaut Mod builds with a rounded sports-watch outline and color-led...

      AQUANAUT WATCH MOD COLLECTION

    • Yacht Master Watch Mod Collection

      YACHT MASTER WATCH MOD COLLECTION

      Seiko Yacht-Master Mods — choose your look. Your watch comes with a...

      YACHT MASTER WATCH MOD COLLECTION

    • Seamaster-style Watch Mod Collection

      SEAMASTER WATCH MOD COLLECTION

      Seiko Mod Seamaster style watches fit buyers who want a sport-watch aesthetic...

      SEAMASTER WATCH MOD COLLECTION

    • Oyster Watch Mod Collection

      OYSTER WATCH MOD COLLECTION

      Seiko Mod Oyster Perpetual style watches are for buyers who want the...

      OYSTER WATCH MOD COLLECTION

    • ModTime black Watch Security Box, divided foam insert and padded lid, open angled view on white

      Watch Accessories

      Watch accessories for travel, storage and safer everyday wear.

      Watch Accessories

    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 size of watch 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 dial option?

      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?

      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 Times 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.

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      ModTime Custom Watches

      ModTime creates handcrafted timepieces designed for individuality and precision. We operate as an independent microbrand with no affiliation, endorsement, or association with any external watch manufacturer. Each piece is assembled by hand and reflects our commitment to quality, artistry, and refined detail.

      GET 10% OFF FIRST ORDER

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