Limited to 1,000 watches, the Ball Engineer Master II Diver Worldtime shows the time in cities around the world and adds a diving bezel for timing.
Born from standard time
American railroads adopted standard time in 1883, the year Webb C. Ball became the first Cleveland jeweler to use official time signals. The Worldtime applies the same idea of standard time zones on a global scale.
World time at a glance
A ring of cities and a 24-hour scale let you compare the time in several zones at once. On the 24-hour scale, the hour next to each city name gives the time there and distinguishes day from night. On a call with colleagues abroad, a glance at the city ring tells you whether they are at work or asleep.
A separate unidirectional diving bezel carries its own elapsed-time scale, so you can time an interval while still reading world time. The blue dial also shows the weekday and date alongside the main hands.
Lit by 36 tritium tubes
Thirty-six sealed tritium tubes keep the hands, dial, and bezel illuminated continuously. They produce their own light without a battery or any need for prior exposure to sunlight or a lamp.
A COSC-certified movement
Inside, the COSC-certified Ball RR1501-C automatic movement provides a 38-hour power reserve and is visible through a sapphire case back. COSC, the official Swiss chronometer testing institute, checks the accuracy of each certified movement over 15 days.
The watch is built to withstand shocks of 5,000 Gs (5,000 times the force of gravity). It also resists magnetic fields up to 4,800 A/m (the international benchmark for anti-magnetic watches). The case is water-resistant to 300 meters.
The details
The stainless steel case measures 42 mm across and 14.4 mm thick, with a screw-down crown. An anti-reflective sapphire crystal covers the display. The rubber strap fastens with a pin buckle.
Read the reference cities against the 24-hour scale to compare several zones together. A conventional GMT uses an additional hand to show another zone. On the Worldtime, the city names identify the zones you can read against the 24-hour scale. The 24-hour scale distinguishes day from night, though not every fractional-hour offset is represented.
Yes. The unidirectional diving bezel provides its own elapsed-time scale. You can use that scale to time an interval while still reading the time in other cities on the city ring and 24-hour scale.
Thirty-six tritium tubes illuminate the hands, dial, and bezel, keeping the time and timing scales lit continuously. Inside each sealed glass tube, tritium activates a luminous coating. The tubes glow continuously, without a battery or any need to be charged by sunlight or a lamp. The glow gradually fades as the tritium decays, with a half-life of about 12.3 years.
Magnetic fields can disturb a mechanical movement’s rate. This watch has magnetic resistance to 4,800 A/m. Stronger fields can exceed that protection.
The movement passed independent chronometer testing over 15 days, in five positions and at three temperatures. The permitted average daily rate during testing is -4 to +6 seconds. The traditional test is performed before the movement is fitted into its case; its daily rate on the wrist can vary.
After setting or winding, return the crown to its closed position and screw it fully into the case before contact with water. Correct closure is needed to maintain the rated water resistance.
Yes, we are an Official Ball Authorized Dealer, and an authorized 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 Ball packaging, with all official documentation and the Ball 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.
Yes — free DHL Express shipping on all orders over $250 (US only).
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 2-3 days, depending on your location.
No, the price you see at checkout is the price you pay — nothing else.
The price you pay at checkout is the final price of the item delivered to your address.
DHL will never ask you for a payment on delivery, and no surprise invoice arrives afterward.
No handling charges, no processing fees, nothing added at the door.
We accept all major credit and debit cards, Apple Pay, Google Pay, PayPal, and bank wire transfer.
Every transaction is fully encrypted, and we never store your card details.
Financing. Choose PayPal at checkout and you may be offered the option to split your purchase into payments or finance it over time, including interest-free plans on qualifying orders. You'll see exactly what's available for your order before you confirm — plans, terms, and eligibility are set by PayPal and subject to their approval, with no obligation to take it.
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:
"In stock, ships within 24 hours" or "Only X units left" — the item is in our warehouse and ships the next business day after you order.
"In stock, ships within X days" — the item is held at our secondary warehouse. We allow a few days to inspect and authenticate it before it ships.
"Check delivery date" — the item 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 delivery date.
Need something by a specific date? Tell us and we'll check before you buy. [Contact our team →]
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 shipping cost is deducted from your refund. If the item arrived damaged or wasn't what you ordered, the return is on us.
Your refund options.
To qualify for a full refund, the item must:
Not sure whether something qualifies? Ask us before you ship it back — we'll tell you straight. Contact our team.
Our specialists are here before and after you buy — no pressure, no obligation. Authorized dealer, official warranty, and guaranteed authenticity on every piece.




