Luminox Pacific Diver Quartz Chronograph Watch with Black Dial.
California’s Pacific coast, where Luminox was founded in 1989, gives the Pacific Diver line its name. With the Pacific Diver Chronograph 3140, the collection adds a chronograph function for timing underwater. Its 316L stainless steel case measures 44 mm and is 12 mm thick.
The Swiss Ronda Z60 quartz caliber powers the hours, minutes, date, and chronograph beneath an anti-reflective sapphire crystal. The case features a screw-in crown, a CARBONOX™ unidirectional bezel, and a 316L stainless steel screw-in case back.
Tritium gas tubes illuminate the hands and hour markers on the black dial for up to 25 years. The watch is fitted with a steel bracelet measuring 24 mm at the lugs.
Into standard 3-hand watches in the 3120 and 3120M series, chronographs in the 3140 series and automatics in the 3100 series, all with a stainless steel case. Luminox was founded in 1989 by Barry Cohen and Richard Timbo, and assembles and tests its watches in Solothurn, Switzerland.
Each marker is a borosilicate glass capsule about 0.5 mm across, coated inside with phosphorescent powder and filled with tritium gas, so it glows around the clock with nothing to charge. Luminox holds the intensity constant for the first 10 years, and after that the brightness decreases gradually as the gas loses energy, over a visible life of up to 25 years.
The upper pusher starts and stops the timer and the lower pusher resets the measured time.
Luminox rates this movement at 43 months on a battery. The tritium tubes are self-powered and draw no energy from the battery.
Sapphire rates 9 on the Mohs scale, just below diamond, and Luminox gives it an anti-reflective coating for readability at any angle in bright light.
Yes, we are an Official Luminox Authorised Dealer, and an authorised dealer for every brand we carry.
With over 15 years in the luxury market, we guarantee the authenticity and quality of every piece we sell.
Your order arrives brand new in its original Luminox packaging, with all official documentation and the Luminox warranty card, stamped and dated by us.
The warranty covers manufacturing defects. It doesn't cover normal wear and tear or accidental damage — and on watches, it doesn't cover straps, bracelets, or batteries.
Questions about a specific piece? Our specialists are happy to help. [Contact our team →]
Questions about a specific piece? Our specialists are happy to help.
Yes — free DHL Express shipping on all UK orders of £400 or more.
Every order ships with a tracking number, so you can follow your package every step of the way. Shipments are fully insured and delivered by DHL Express with signature required.
Most in-stock orders arrive within 1-2 working days of dispatch.
No — the price you see at checkout is the price you pay.
Our prices include VAT, and nothing is added beyond the delivery charge shown.
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Paying by wire, or buying more than one piece? [Contact our team →] and we'll take care of you personally.
You'll find availability on every product page, right above the Add to Cart button. Here's what each status means:
"Dispatched next working day" or "Only 1 left" — the piece is in our warehouse and leaves the working day after you order.
"Dispatched within X working days" — the piece is held at our secondary warehouse. We allow a few days to inspect and authenticate it before dispatch.
"Check delivery date" — the piece is available to order, but we confirm the exact date with the brand. As soon as you order, we contact the manufacturer and email you an estimated date.
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You have 30 days from delivery to return your order.
How returns work. Just let us know and we'll email you a prepaid DHL Express return label — you never have to arrange a shipment or pay anything up front. The return cost is deducted from your refund. If the piece arrived damaged or wasn't what you ordered, the return is on us.
Your refund options.
To qualify for a full refund, the piece must:
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Our specialists are here before and after you buy — no pressure, no obligation. Authorised dealer, official warranty, and guaranteed authenticity on every piece.







