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What is the difference between a modified watch and a custom-built watch?

A modified watch and a custom-built watch are both distinct approaches to creating unique timepieces, and they differ in their processes and end results.

  • A modified watch is an existing watch, often a standard production model, that has been altered or customized to enhance certain features or aesthetics.
  • Modifications can include changes to the watch's dial, hands, bezel, case, movement, or other components.
  • A custom-built watch is entirely created from scratch based on the customer's unique specifications and preferences.
  • Every component of a custom-built watch, including the case, dial, movement, hands, and more, is selected or designed according to the customer's desires.

Are your watches ready to ship?

Although most of our watches are made to order, please visit here to see if we have any ready-to-ship watches available.

Can I request a watch that you've previously built?

Certainly! Many of our customers contact us inquiring about our past builds. It's important to note that while we make every effort to fulfill these requests, some of the components we used in previous builds are rare and may no longer be obtainable.

How long is the leadtime?

Typically, it takes 2-4 weeks for us to complete an order.

Where do you source parts?

While there are numerous parts suppliers in the market, we maintain a stringent selection process as we are committed to delivering the utmost quality. Below, you'll find a list of reputable suppliers with whom we have longstanding relationships, ensuring the premium quality that reflects the value you invest in.




I want to design my watch. Where do I start?

Please visit here and submit a request. We'd be happy to assist you.

Which movement do you use or recommend?

We select from a range of Seiko movements to best match our customers' specific requests and budgets. The NH35/36, known for its affordability and reliability, is a popular choice, offering an automatic mechanical movement with manual winding and hacking features. However, it has a power reserve of approximately 40 hours. For those seeking a longer power reserve and having more flexibility in their budget, we recommend considering the 6R15 or 6R35 movements.

Are your watches waterproof?

After modification or assembly, each of our watches undergoes meticulous wet-pressure testing to a depth of 10 ATM (100 meters). This rigorous testing ensures that our timepieces are capable to handle the demands of everyday life, including water activities like swimming and showering.

Please understand while they are water-resistant and capable of withstanding exposure to water, we recommend avoiding any high-impact or extreme water sports to preserve the longevity of your timepiece.

Do you offer a warranty?

Yes, all of our watches, whether they are modified or custom-built, are accompanied by a 24-month warranty. You can find further details by visiting here.

What is your return policy?

 "SEIKO MOD" watches purchased from our store are eligible for refunds, provided they are returned within 14 days from the date of receipt. To qualify for a refund, the item must remain in unused condition, and must be returned in its original packaging. Please be aware that since our watches are individually handcrafted to order, all refunds are subject to a 10% service fee deduction from the total order amount.

"READY-TO-SHIP" purchased from our store are eligible for refunds, provided they are returned within 14 days from the date of receipt. To qualify for a refund, the item must remain in unused condition, and must be returned in its original packaging. All "Ready-to-ship" order refunds are subject to a 5% restocking fee deduction from the total order amount.

"CUSTOM ORDER" watches are not eligible for returns or refunds as they involve substantial time and expenses associated with crafting unique timepieces.



Most popular movement, a very affordable yet reliable automatic with manual winding, hacking features, and offering an approximate 40-hour power reserve.


Non-Date version of NH35/36. We recommend using this calibre for a watch not requiring day/date function.


We recommend these for skeleton watches that do not require dials.


An automatic movement based on the Seiko branded 4R34, distinguished by its notable GMT complication, represented by the 24-hour hand.


Its specifications are identical to the NH36, but it has the Seiko branding.


These movements are often found in Seiko's high-end watch collections, which are priced between $800 and $1500, owing to their exceptional precision and extended power reserves

6R15: approx. 50-hour
6R35: approx. 70-hour