Skip to product information
A Master Black GMT Seiko Mod watch with a black dial, silver bracelet, and black rotating bezel. Features 904L premium grade stainless steel and sapphire scratch proof glass with an automatic movement.
1/2

GMT Mod - Master Black Edition

2 reviews

Sale price  £250.00 GBP Regular price  £299.99 GBP
Taxes included. Shipping calculated at checkout.
Leather watch box & Tool gift

Each watch comes in a premium leather watch box & with a tool so that you can adjust the links.

Express Worldwide Shipping

We will work quickly to assemble & ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.

Shop with confidence

Every timepiece is hand-built in our independent London workshop using genuine Seiko movements and premium materials like 904L stainless steel and sapphire crystal. We take pride in craftsmanship, transparency, and reliability

Bracelet
Case Back
27 people have viewed this product in the last 24 hours
Payment methods
  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • iDEAL
  • Klarna
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Seiko Mod GMT - Master Black Edition (40mm) - NO GMT HAND (VISIT CONFIGURATOR +£15)

Inspired by the classic GMT design, this Seiko Mod merges iconic styling with a robust build. Housed in a 40mm 904L stainless steel case and bracelet, it features a luminous master-black-style dial and a 120-click rotating bezel for dual time tracking. Fitted with a reliable automatic movement and sapphire crystal, it offers everyday versatility with a premium edge. Hand-assembled to ensure high-end quality, it’s the perfect piece for those who value craftsmanship without compromise.

Specifications:

  • Case Diameter: 40mm (excluding crown)
  • Movement: Automatic - No GMT Function (+£15)
  • Case Thickness: 12mm
  • Crystal: Sapphire with anti-scratch and anti-reflective treatment
  • Lume: Yes (dial)
  • Case Material: 904L stainless steel
  • Crown: Screw-down
  • Bezel: 120-click unidirectional rotating bezel
  • Bracelet: 904L stainless steel with secure clasp
  • Lug Width: 20mm
  • Wrist Size: Adjustable from 14.5cm to 22cm
  • Case Back: Crystal (open) or solid steel (closed)
  • Water Resistance: 10 ATM
  • GMT Function: Dual time via rotating bezel (no 24-hour hand)

Combining timeless design with modern durability, the Mod GMT is your go-to companion for travel, work, or everyday wear.

Build Time

Please allow up to 7-12 business days for our experts to professionally assemble your watch. In extreme cases assembly times may extend up to 21 working days due to peak times or holiday closure. For an accurate timeline, please get in touch.

Shipping Time

Depending on your chosen delivery method, domestic orders can be shipped using an express next-day delivery service once assembly is complete. For international orders, please refer to our shipping policy or contact us for further information.

Quality Guarantee

We take great pride in our craftsmanship and guarantee that our watches are made with the highest quality standards. Our 5 star reviews speak for themselves!

PROTECT INVESTMENT

Frequently asked questions

Product

Can I adjust the strap size?

We include a complimentary tool kit (for free) on all orders to help you adjust the strap properly.

What movements do you use?

We use Seiko automatic movements such as the NH34, NH35, NH36, NH38, NH70, NH72 and Seiko quartz movements such as the VK61, VK63 & VK64.

Can i remove seiko logo?

Absolutely! Simply add the desired watch to your cart and include a note in the cart section saying: "No Seiko logo". We'll take care of the rest.

ID PREFER A DIFFERENT STRAP/DIAL.

We can create your piece 100% custom-made. Just contact us via Email and together we'll explore the possibilities. You'll receive a response within 24 hours.

Where are your watches assembled?

We assemble all our watches in a private workshop in London, United Kingdom, but to reduce wait times for our customers, we may use partner workshops in other cities across the UK.

Are you affiliated with Seiko?

No, under no circumstances.

We use original Seiko automatic movements for their quality and reliability. Each watch is then assembled with custom parts exclusively for each client.

Are they waterproof?

Our watches are rated at 3 ATM water resistance, meaning they’re suitable for everyday exposure such as light rain or accidental splashes. However, they are not recommended for swimming or diving.

Water resistance can be affected by several factors, including an unscrewed crown, sudden impact, or extreme temperature changes.

If you require a higher level of water resistance for swimming or similar activities, please contact us prior to ordering so we can make the necessary adjustments.

Finally, please note that any water resistance markings on the dial are purely decorative and do not reflect the actual technical specifications of the watch.

ARE THERE ANY SALE OFFERS?

Because you made it this far into our FAQs, you are welcome to use BESTWATCHESEVER at checkout for a discount on your next order.