Ball Engineer Hydrocarbon AeroGMT II Automatic Watch with Black Dial.
The Engineer Hydrocarbon line carries Ball's heaviest protection: crown guards, lubricants rated for extreme cold, and several models developed with military and professional diving units. The AeroGMT II is its aviation version, with a bidirectional bezel graduated over 24 hours that adds a third time zone to the local and GMT readings the hands already carry. The case measures 42 mm in stainless steel, 13.85 mm deep.
The Ball RR1201-C holds COSC chronometer certification. 44 sealed glass tubes of tritium gas light the hands, the indices and the bezel, each one self-powered for 25 years. Around it, the case absorbs impact to 7,500 Gs and magnetic protection reaches 4,800 A/m.
All 44 tubes light continuously, so the watch reads the same at 3 a.m. as at noon.
The 44 tubes hold tritium gas, which emits its own light through radioactive decay, continuously and on its own energy. Tritium has a half-life of 12.3 years, so the glow fades slowly. Ball rates the tubes for at least 25 years of useful reading.
The movement was tested for 15 days by the Contrôle Officiel Suisse des Chronomètres in 5 positions and at 3 temperatures, and it has to hold an average daily rate between -4 and +6 seconds. The certificate covers the movement as tested, before it was cased.
The case holds magnetic protection to 4,800 A/m, which covers the everyday sources that shift the rate of a mechanical watch.
The central hands show local time, the GMT hand reads a second zone against the 24-hour scale, and turning the bezel sets a third. Three zones read at once from one dial.
The crown is the opening in the case, and the point where water and dust reach the movement first. A guard takes the blow before the stem does, and keeps the crown from being knocked open against a door frame or a rock.
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.
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 →]
Yes — free DHL Express shipping on all US orders of $250 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 2–3 business 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 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.




