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Official UK Authorised Retailer
Full Manufacturer Warranty
30 Day Returns
Free Delivery
Customer Service & Technical Support
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Luminox Master Carbon SEAL Automatic Blue 3860 Series XS.3863 is a robust and innovative automatic dive watch from Luminox’s Master Carbon SEAL Automatic collection, combining Swiss engineering with the brand’s signature rugged design. This model showcases a bold blue dial and a lightweight, durable CARBONOX™+ case, reflecting Luminox’s commitment to performance and everyday readiness.
Automatic Precision and Endurance
At the heart of the Master Carbon SEAL Automatic 3863 is a Swiss automatic Calibre Sellita SW 220-1 movement, offering dependable mechanical performance with day and date functions. The exhibition case back allows a view of the movement and automatic rotor in action, highlighting the craftsmanship that powers this timepiece.
Dial Designed for Visibility
The striking blue dial is engineered for exceptional legibility, featuring clear hands and indices enhanced by Luminox Light Technology for constant visibility in low-light conditions. The dial is protected by a sapphire crystal with anti-reflective coating, ensuring clarity and resistance to everyday wear.
Advanced Materials and Construction
This model’s CARBONOX™+ case a lightweight, hypoallergenic, weatherproof and shock-resistant carbon compound provides remarkable durability without compromising comfort on the wrist. A unidirectional rotating bezel and screw-down crown enhance the watch’s functional dive capabilities, while the rubber Cut-To-Fit strap integrates seamlessly with the 45mm case for a sporty, purposeful look.
Built for Underwater Confidence
With water resistance to 200 metres (20 ATM), the Luminox Master Carbon SEAL Automatic 3863 is engineered for aquatic exploration and daily adventures alike. The combination of robust construction, Swiss automatic movement and bold design makes this timepiece an enduring choice for those who seek both functionality and distinctive style in an everyday mechanical watch
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UK Delivery
| Selling Price | Royal Mail 48 (Tracked) |
Royal Mail 24 (Tracked & Signed) |
Special Delivery Next Day (Mon – Fri) |
Special Sunday Delivery (Before Sat 12pm) |
Royal Mail Special Delivery by 1pm |
|---|---|---|---|---|---|
| £0 to £99.99 | FREE | £4.99 | £7.99 | £7.99 | £9.99 |
| £100 to £499.99 | N/A | FREE | £7.99 | £7.99 | £9.99 |
| £500 or more | N/A | N/A | FREE | £7.99 | £9.99 |
We know your order is important to you, so we use Royal Mail’s tracked delivery service on all UK orders.
We also offer Royal Mail Special Delivery service, which for an additional fee offers guaranteed delivery the next day before 1pm.
*Royal Mail Tracked 24 and Royal Mail Tracked 48 services are 98% accurate but not guaranteed.
Orders placed before 5pm (Monday–Friday) are dispatched the same day. Orders placed on Saturday or Sunday are dispatched the following Monday.
International Shipping & Duties (Delivered At Place – DAP)
We’re pleased to offer worldwide delivery with fully tracked and insured shipping.
How international orders work
All international orders are shipped on DAP (Delivered At Place) terms. This means:
- The price you pay at checkout covers your goods and international shipping only.
- WatchNation does not collect or charge any overseas sales tax, import VAT, or customs tariffs (duties).
- When your order reaches your country, local customs authorities may apply:
- Import VAT (value-added tax),
- Tariffs or customs duties (import taxes based on product category and value), and
- Handling or clearance fees from the courier.
These charges are set by your country’s customs authority and are payable by you before delivery.
You’ll be contacted directly by DHL with a secure link to pay any applicable charges. Once cleared, your parcel will be released and delivered promptly.
Estimated delivery times (after dispatch)
- European Union: approximately 2–5 working days
- Rest of World: approximately 5–7 working days
Customs processing times vary by country and may extend delivery slightly.
If import charges, tariffs, or duties are not paid
If local charges are unpaid or delivery is refused, the shipment will be returned to us. In this case, we will refund your order minus the outbound shipping cost and any return or customs fees billed to us by the carrier.
Estimating import costs
Import VAT and duty rates vary by country. You can check estimated import taxes and tariffs by contacting your local customs authority or using your government’s online import calculator.
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Need help?
Frequently Asked Questions
Yes — we are an Authorised Dealer for every brand we sell. All watches come with an official box, papers, and a full manufacturer’s warranty.
Every watch includes a manufacturer warranty. You’ll find more warranty info listed in the product description.
Orders placed before 5pm (Mon–Fri) are dispatched the same day. Order before 12pm on Sat for same-day dispatch. Free UK delivery is available on all orders, and tracking details are provided once shipped.
Yes — you have 30 days from delivery to return or exchange your item, provided it’s unused and in its original packaging.



