41mm (excluding the crown)Seiko NH38 Automaticsapphire
In stock
£279
£279
Pay in 3 interest-free payments of
£93
Pay in 3 interest-free payments of
£93
2-year warranty
28-day returns
Timed & tested
Delivered to
your city
in 5–8 working days from order (Mon–Fri)
FREE watch box + tool kit with every watch (worth £49)
Product Description
Seiko Mod "Olive Green Open Movement Nautilus"
Honoring the iconic Olive Green Open Movement Nautilus model, this watch pairs the famous rounded-octagon case with a clean, sporty presence that works from the office to the weekend.
Key Features:
Case Diameter: 41mm (excluding the crown)
Case Thickness: 12mm
Case Material: 904L Stainless Steel
Dial: Open-heart dial revealing the beating balance wheel, with luminous hands
Featuring a professionally restored authentic Seiko movement, known for its exceptional dependability, each watch is upgraded with new aftermarket elements including the bracelet, bezel, sapphire crystal, crown, and clasp. As the movement is refurbished, the overall condition is marked as pre-owned.
Shipping & Delivery
Made to order. At your door in 5–8 working days.
Every watch is hand-assembled to order and delivered within 5–8 working days of ordering. Working days are Monday to Friday, so weekends and bank holidays aren’t counted. You'll get a tracking link by email as soon as it ships.
Checked before it ships — every watch is tested so it works properly the moment it's on your wrist.
Free tracked shipping — straight to your door, with tracking sent as soon as it's on its way.
Customer Offers
Black Friday: buy any 2 watches and save £100, plus a free extra strap on selected watches (pick it above)
Free leather watch box and tool kit with every watch
Very happy with the watch. Having owned an Omega Seamaster before, this is the exact same size and weight. Quality is 10/10 and keep good time. Great watch for the price A++
Delivery was swift. Packaged well. Out of the box and the watch looked stunning. It has had plenty of admiring looks and comments. I 'modded the mod' by asking for an oyster bracelet rather than a NATO strap and this was no bother and I am glad I did. The weight is substantial and is very well made.
Love the design and colours of this seiko watch,
which will be added to my collection of watches,
When I first saw this watch advertised I said to myself that’s for me and by golly it’s fantastic.
Wasn’t quite sure what to expect, but quick delivery, excellent packaging. Watch felt heavy and well made. Didn’t realise one of the knobs was a fake, but at that price, not too bothered. Will be purchasing again. No complaints.
Perfect ,just perfect half blue half red if you know you know anyone who was born in Liverpool will understand exactly what l mean classy watch for a classy city
Yeah I ordered the seikomaster 41mm James Bond with mesh bracelet and updated dial. I had been wanting one for so long to add to my collection and now at long last I have it. It's a beautiful piece and I'm very happy to have it. My collection includes original Omega, Longines and Tudor pieces, amongst many others.
This is my first purchase of a seiko mod and it certainly won't be my last. I look forward to my next purchase and maybe even a small discount as a returning customer.
Thank you D McWilliams
Really pleased with the Seiko Mod No time to Die, transfered mine on to a NTD NATO strap and it’s just the perfect combo. It has great weight and feel. Yes different to the £9.5k titanium Omega that it takes its design quest from. But this is absolutely perfect for what I want from a Mod watch. Could not be happier and would definitely consider further purchases. Already have my eyes on the Daytona and Speedmaster styles!
30/07/2026
Absolutely love my watch, Great communication throught from Adam.
Have another 2 on way and will for sure buying more. Great products, Great Customer service 👍🏼 👌🏽
Absolutely love my watch, Great communication throught from Adam.
Have another 2 on way and will for sure buying more. Great products, Great Customer service 👍🏼 👌🏽
Very good quality nice looking watch took 5 weeks to arrive due to problems getting parts but worth the wait looks exactly like a real AP from a distance.👍🏼
You won't regret it, such a nice seiko mod watch, great quality, nice weight to it and I love the strap too. All in all... I am very happy.....now, which one should I get next 🤔
Very happy with my purchase. Didn’t know what to expect. But all the GMT functions work properly. Weight is very good even compared to my genuine top end watches. This is worth every penny. Would recommend
Very impressed. Catches the light very well even in dark lighting. Cyclops is amazing with the zoom. Had watches in the past where the numbers in the window looked horrendous. This is 10/10 would definitely recommend
Finally my watch came today and I am inpressed with the quality of the watch, nice weight and very good on the eye.
Nice watch for the price. Build quality is very good.
Thanks.
100% Seiko engine. A genuine Japanese movement, proven over decades.
Premium materials. 904L steel case and scratch-resistant sapphire crystal.
Checked before it ships. Every watch is timed and tested for fit and finish.
Risk-free. 2-year warranty and 28-day returns.
Why pay more?
The same look and feel, for a fraction of the price.
Feature
On Time
The icon it's inspired by
Price
£279.00
£8,000+
Movement
Genuine Seiko
Swiss in-house
Crystal
Sapphire
Sapphire
Availability
Made to order, at your door in 5–8 working days
Waiting lists common
Returns
28 days, no questions
Varies by retailer
Wear it worry-free
Yes, every day
Too precious to risk
Frequently asked questions
What Is It?
A Seiko Mod is a custom built watch that uses a Seiko movement most commonly the NH35, NH36, or NH34 combined with aftermarket/custom components.
Typically, the builder changes parts such as:
Dial custom design
Hands different style/finish
Case often inspired by luxury watch designs
Bezel
Bracelet/strap
Crystal often sapphire
Movement genuine Seiko NH-series automatic movement
The important distinction
A Seiko Mod isn't a watch made by Seiko. The movement may be genuine Seiko/NH-series, while the rest of the watch is assembled from third party components.
For example, a watch could contain a genuine Seiko NH35 automatic movement, but have a third-party case, dial, hands, bracelet and crystal.
That's essentially what makes it a "mod": you're modifying/customising the watch rather than buying a complete factory Seiko model.
In simple terms:
Seiko Mod = Seiko automatic movement + aftermarket/custom watch components, assembled into a customised watch.
Is It Genuine?
Yes, Seiko sells their movements to third parties, independent watchmakers, and microbrands. We Pair this with aftermarket parts inspired by iconic models.
What If I don't like the watch?
Simply request a return using the email provided at the bottom of your email invoice.
Please note: Return postage costs are not covered by us and are the customer’s responsibility. Returns must be requested within 28 days of delivery.
Where are your products manufactured?
Where Are Your Watches Manufactured?
Our watch components are sourced from Japan and assembled by watchmakers in both the UK and Taiwan.
Because Japan and Taiwan are geographically close, we’re able to maintain an efficient supply and production process, allowing components to move quickly between suppliers and our assembly partners.
We use a hybrid production model our UK watchmakers handle orders where possible, while our trusted Taiwan based team helps with additional production during periods of high demand.
This allows us to maintain consistent quality while getting your watch to your door within 5–8 working days of ordering (Monday to Friday, excluding weekends).
How long will it take to arrive?
Every watch is made to order and arrives within 5–8 working days of ordering. Working days are Monday to Friday, so weekends and bank holidays aren’t counted. You'll get a tracking link by email as soon as it ships.
Is it waterproof?
Our watches are rated 3 ATM: fine for splashes and rain, but not for swimming or showering.