By Brent Robillard
Everything is bigger in Texas
Three years ago, I reviewed the original Jack Mason Strat-o-timer GMT. At the time, it felt like one of the more compelling entries in the suddenly crowded affordable GMT space. The formula was simple enough: take inspiration from the classic GMT-Master 6542, add a traveller GMT movement, give it a distinctive cushion case, and keep the price within reach of ordinary enthusiasts.
But apparently, everything really is bigger in Texas.
This latest generation of the Strat-o-timer arrives in three colourways—Verdant, Dark Night, and Americana—but the biggest story isn’t the bezel colours. It’s the case. The Strat-o-timer has grown from 40mm to 42mm, bringing with it a broader wrist presence and a slightly different personality.
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Americana
The version I had in for review was the Americana, with its familiar blue dial and red-and-blue bezel. In truth, aside from the increase in size, it is largely the same watch I reviewed back in January of 2023. That’s not a criticism. Quite the opposite, actually. The original worked so well that there was little reason to reinvent it.
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Key Features of the Jack Mason Strat-o-timer GMT 42mm
Dimensions
The new dimensions measure 42mm across, 49mm lug to lug, and 13.2mm thick. Lug width has increased to 22mm, while the screw-down crown has grown to a substantial 7.5mm—creating a silhouette I really love. On paper, those numbers sound large. In practice, however, the watch wears much smaller than expected.
That’s something I noticed almost immediately.
For years now, enthusiasts have been calling for smaller watches. Brands have listened. Cases have shrunk from 42mm to 40mm, then 39mm, 38mm, and in some cases all the way down to 36mm or even 35mm. Yet if you talk to the people actually selling watches, the story is often different. Across much of the market, larger watches continue to outsell their smaller counterparts. The sweet spot remains somewhere around 40 to 42mm, and some brands—like Breitling and Citizen—report their strongest sales well beyond that.
The Strat-o-timer seems designed with that reality in mind.
Cushioning the blow
Its cushion case does a remarkable job disguising its true dimensions. The watch has presence, certainly, but it never feels cumbersome. In fact, it reminds me quite a bit of the Seiko Turtle I owned years ago. The Turtle’s dimensions always looked intimidating on a spec sheet, yet somehow disappeared once it was on the wrist. The Strat-o-timer achieves a similar trick.
I wore the Americana around town while running errands the other day and eventually stopped at my favourite coffee shop to take a few photographs. It never felt oversized or awkward. Instead, it settled comfortably into that space between vintage-inspired charm and modern practicality. For reference, my wrist (featured in these pics) measures six and three quarter inches.
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Dial and crystal
A large part of that charm comes from the crystal.
Jack Mason has retained the beautiful box sapphire crystal that was one of my favourite elements of the original watch. Viewed straight on, it offers excellent clarity. Viewed at an angle, it produces the sort of distortions enthusiasts love. It adds depth, character, and a healthy dose of vintage flavour without sacrificing durability.
Beneath it sits a sunray blue dial with applied polished markers, baton-style hands, lollipop seconds, and a red-tipped arrow GMT hand. The layout remains clean and highly legible. BGW9 Super-LumiNova is applied to both the dial and ceramic bezel, ensuring visibility after dark.
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Movement
Like the original, the Strat-o-timer uses the Miyota 9075 traveller GMT movement. This remains one of the most compelling GMT calibres available at this price point. Unlike a caller GMT, the 9075 allows independent adjustment of the local hour hand. For anyone crossing time zones regularly, that makes a meaningful difference.
Combined with the bidirectional 48-click ceramic bezel, the watch can track up to three separate time zones simultaneously. Whether you’re coordinating work across continents or simply keeping tabs on family abroad, it’s a genuinely useful complication. Jack Mason also regulates the movement in the United States to an advertised accuracy of +/- five seconds per day, which is considerably tighter than standard factory specifications.
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Bracelet
The bracelet deserves mention as well.
The seven-link stainless steel bracelet is comfortable, flexible, and well suited to the overall design. Quick-release spring bars make strap changes easy, while the tool-less micro-adjustment clasp offers welcome flexibility throughout the day. Unlike some systems, it adds virtually no extra bulk to the clasp itself. The only caveat is that you’ll need to remove the watch from your wrist before making adjustments. Both the case and the bracelet are treated with a scratch-resistant coating, as well.
Specs
| Case | 316L Stainless Steel 42mm Diameter 49mm Lug to Lug 13.2mm Thick 22mm Lug Width Screw Down Crown & Caseback Ceramic 48-click Bezel 200m Water Resistance |
| Dial & Crystal | Box Sapphire Crystal Sunray Dial applied Markers Baton Handset BGW9 Super-LumiNova |
| Movement | Miyota 9075 Regulated to +/- 5 secs/day 25 Jewels 28 800bph 42-Hour Power Reserve |
| Strap | 7-link Stainless Steel /w Tool-less Microadjust & Quick Release Spring Bars |
Jack Mason Strat-o-timer GMT 42mm
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Final Thoughts & Pricing
What I continue to appreciate about the Strat-o-timer is that it doesn’t feel like a simple homage. Yes, the Americana colourway clearly recalls the GMT-Master 6542. The red-and-blue bezel, arrow GMT hand, and overall aesthetic make that connection obvious. Yet the cushion case gives the watch a personality all its own.
It’s more robust. More casual. More capable of crossing over from airport lounge to beach chair.
With 200 metres of water resistance, a traveller GMT movement, and excellent legibility, it is exactly the sort of watch I’d want accompanying me on a winter escape somewhere warm. It offers genuine travel functionality while retaining enough vintage character to keep things interesting.
Three years after my first encounter with the Strat-o-timer, the formula still works.
It’s larger now. That’s undeniable. But it wears its size surprisingly well. And for enthusiasts who have been wishing for a GMT with a bit more wrist presence, Jack Mason may have delivered exactly what they’re looking for.
The Jack Mason Strat-o-timer GMT 42mm retails for 1,149 USD (approx. $1,590 CAD). For more information, please visit the brand website.
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About the Author
Brent Robillard is a writer, educator, craftsman, and watch enthusiast. He is the author of four novels. You can follow him on Instagram.
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