Grand Seiko SBGE255 Review: A Simple yet Functional GMT Watch

Sometimes, I think it’s good to try on and test out watches you wouldn’t typically go for. I’m someone who typically leans towards minimalistic dress watches with relatively small case dimensions and clear, colorful dials. 

But what that does mean is that my collection becomes filled with watches that all look the same. Sure, they’re watches that make me happy, but sometimes I wish I had a watch that was different. 

I’m sure you also have those days where you feel a little braver and want to wear something larger or maybe something more masculine but still sophisticated. My advice: try on watches you wouldn’t normally choose. 

It’s for this reason, I’m reviewing the Grand Seiko Sport GMT SBGE255. It’s a watch I’d normally give a nod of appreciation to, simply because it’s Grand Seiko, but I wouldn’t necessarily try it on because of its dimensions and overly sporty and masculine design. But here I am, testing out this undeniably handsome, but albeit different to my norm, timepiece. Here’s how it went…

History of the Grand Seiko GMT

If you’re here, then I probably don’t need to waste your time explaining how much of a big deal Grand Seiko is in the luxury watch world. The company kicked things off back in 1960 with the aim to prove that the Japanese could do watchmaking just as well as the Swiss. 

For most of their early history, they were busy creating in-house movements and high-performance dive watches. So much so that they didn’t launch their first GMT model until 2002. 

This model was the SBGM001, and it looked very different to the Grand Seiko Sport GMT SBGE255 I’m reviewing today. It was rather dressy with a brightly polished case and an understated cream dial. But it was a game-changer, especially for those who needed to track multiple time zones as they traveled the world but didn’t want to sacrifice on style. 

But here’s the thing: while their GMT watches have always been amazing, many of them – especially in their Sport family – have been rather large and, for some, oversized. 

The sporty GMT models equipped with their ground-breaking Spring Drive or Hi-Beat movements were typically stuck in these 44mm cases, which is huge if you’ve got a smaller wrist (or just prefer a more compact watch). That all changed in 2020 when Grand Seiko dropped a new range of GMT Spring Drive watches in a much more wrist-friendly 40.5mm size. 

These new models didn’t just shrink the case—they also brought in some sweet upgrades, like a fixed ceramic bezel, 200 meters of water resistance, and a new bracelet with a micro-adjust feature. 

The collection debuted four iterations in total: the SBGE253 with a sleek black dial and bezel, the SBGE257 with a vibrant green combo, the SBGE255 with a stunning blue setup (the model I’ve had the pleasure of reviewing), and the SBGE263, a limited edition with an “Eagle” dial made exclusively for the U.S. market.

A Compact Case

One of the standout features of the Grand Seiko Sport GMT SBGE255—besides its top-notch caliber, which I’ll dive into soon—is its case dimensions. As I mentioned earlier, this is one of Grand Seiko’s most compact GMT models, yet it still packs an oversized GMT function. 

GMT watches tend to be on the larger side, or at least a bit chunky, because of that extra layer of hands, but this one manages to keep things relatively compact. It measures 40.5mm in diameter and 48.7mm lug-to-lug, though it’s worth noting that the lug-to-lug is closer to 50mm when you include the end links of the bracelet since they don’t articulate. 

It wears pretty well overall, but it does have a solid height of 14.7mm—thanks to the extra GMT complication and the double-domed sapphire crystal, which has anti-reflective treatment on the underside. 

The silhouette of the stainless steel case sticks closely to the look of Grand Seiko’s larger Sport GMT models. Essentially, they’ve just downsized the dimensions to fit more wrist sizes while keeping all the original design DNA intact. 

You’ve got that nice curvature along the sides, with Grand Seiko’s signature Zaratsu polishing on certain elements, which gives the case those crisp, distortion-free mirror finishes. The polishing is mixed with brushed surfaces for a nice touch of visual depth. 

A lot of the case’s real estate is taken up by the bezel, which is made from glossy blue ceramic and features an engraved white 24-hour scale for the second time zone. 

Following the lead of Grand Seiko’s dive watches, the SBGE255’s case has a screw-in case back and a screw-down crown at 4 o’clock. This crown position not only helps with comfort but also adds to the watch’s sporty personality. 

These features combine to give you a solid 200 meters of water resistance, which is perfect for a watch like this, in my opinion. I’ve always thought GMT watches should have at least 100 meters of water resistance—after all, these are the watches you’re taking on your travels, so they need to be able to handle whatever comes their way. 

It’s great to know the Grand Seiko Sport GMT SBGE255 will handle a dip in the pool or even a dive in the ocean without a problem on your next holiday.

A “Simple” Dial

Housed beneath the domed sapphire crystal of the Grand Seiko Sport GMT SBGE255 watch is a deep blue dial, and one that might initially seem understated, especially compared to some of Grand Seiko’s more intricate designs. 

Many of the watchmaker’s dials often feature complex textures inspired by Japanese culture, but here, they’ve gone for a more straightforward approach with a deep navy metallic sunburst finish. 

Sure, it’s simpler than other Grand Seiko dials, but it’s still got its own charm, fitting perfectly with the watch’s sporty, masculine vibe. The dial’s simplicity actually lets the watch’s functions stand out more. 

Take the sloped chapter ring around the edge, for instance—it’s got 24-hour indices marked at odd numbers, making them easier to read. The scale is also split into navy and silver sections to differentiate between day and night hours. 

Moving inward, there are white printed minute markers and a set of faceted, polished hour markers that are beautifully hand-finished. The indices at 12, 3, 6, and 9 are larger, making the watch easier to read and giving space for small patches of lume to improve visibility in the dark. 

The shape of the hour and minute hands echoes the indices, with both featuring tapering tips and lume of their own. A smooth seconds hand and a bright blue GMT hand round out the set. 

Other dial features include a power reserve indicator between 8 and 9 o’clock, finished in black and white, and a date window at 4 o’clock, which replaces the hour marker to keep the dial clean and concise. 

The applied GS logo sits proudly at 12 o’clock, while the lettering at 6 o’clock denotes the Spring Drive GMT movement. The “GMT” part of the text is highlighted in the same blue as the GMT hand. 

Naturally, since the Grand Seiko Sport GMT SBGE255 watch has some lume on the dial, I had to test it in the dark. I’m happy to report it performs well. While it doesn’t have as much lume as a Grand Seiko dive watch, the subtle green glow is perfectly in line with its sporty aesthetic, adding just the right touch of luminous readability without going overboard.

A Spring Drive Movement

I’ve mentioned it before, but I’ll say it again: Grand Seiko’s Spring Drive movements are one of the greatest achievements in watchmaking. For those unfamiliar with the Spring Drive, it’s a unique movement that blends the best of both mechanical and quartz technology. It uses a traditional mainspring to store energy, just like a mechanical watch, but it also incorporates a quartz oscillator for precise timekeeping. This combination means you get the smooth, sweeping motion of the second hand and an incredible rate of accuracy. 

For example, the Grand Seiko Sport GMT SBGE255 is powered by the Caliber 9R66, which is tested to be accurate to +/- 15 seconds a month, or about +/- 1 second per day. The movement is also a “true” GMT. 

\Unlike some GMT watches that simply add a second timezone on top of a standard movement (often referred to as an “office GMT”), the 9R66 is a true GMT. This means it has a dedicated mechanism for tracking a second time zone so you can set the GMT hand independently in one-hour increments, which is especially handy for frequent travelers. 

It also means you can adjust the GMT hand without affecting the local time or the minute hand, making it easy to keep track of multiple time zones. 

Additionally, the Caliber 9R66 boasts a power reserve of 72 hours or three days. That means you can take the Grand Seiko Sport GMT SBGE255 watch off on a Friday evening and put it back on Monday morning without worrying about it losing time. 

While I can’t show you the movement directly since it’s hidden behind a screw-down case back adorned with the Grand Seiko lion logo, rest assured that it’s beautifully decorated. I’ll forgive the lack of an exhibition case back since we’re getting an enhanced 200-meter water resistance instead.

A Bracelet with Micro Adjustments

The Grand Seiko Sport GMT SBGE255 watch comes with a well-suited three-link bracelet that attaches neatly to the case at 20mm. It’s a perfect match in terms of proportions and style, fitting the sporty aesthetic just right. The stainless steel features mostly brushed surfaces with a few polished accents to match the finishing of the case perfectly. 

One of the best features of this bracelet – at least for me – is the inclusion of micro adjustment. It has four micro-adjust slots, which means you can get that perfect fit no matter how your wrist size changes throughout the day. 

And let’s face it, micro adjustment is a game-changer, especially for a GMT watch. When you’re on holiday, you might go from a sweaty outdoor adventure, where your wrist swells up, to a cooler indoor setting where it shrinks back to normal. Being able to tweak the bracelet’s fit on the fly is super handy in these situations. 

If you’re not a fan of the metal bracelet, or if you’re traveling in warmer climates and prefer something more comfortable, you can easily swap it out for any 20mm strap. There’s a huge range of 20mm straps that would look great on this watch. My first thought was a dark brown calfskin leather band, which could give it a nice, sophisticated look. The drilled lugs make swapping straps a breeze, so you’re not stuck with just one option. The bracelet closes with a twin-button folding clasp, which features the Grand Seiko logo in relief.

On-Wrist Experience 

When I first pulled the Grand Seiko Sport GMT SBGE255 watch out of its box, I was worried it might still be too big for my five-and-a-half-inch wrist. But I was pleasantly surprised. 

While it is a relatively thick watch—something that’s common with most GMTs—I found the wearability to be excellent. This is largely thanks to the 40.5mm case width and the curved lugs that gently hug the wrist. 

In terms of fit, I’d say it would comfortably suit wrists ranging from 6 to 7.5 inches. And even if you have a wrist that’s a bit smaller or larger, you could still pull it off depending on your personal style and preferences. The design does a great job of balancing presence with practicality, which can be hard to do with a GMT watch. 

Visually, it’s a stunner. The Grand Seiko Sport GMT Spring Drive SBGE255 exudes a confident, masculine charm that I know many of you will enjoy. It’s versatile enough to transition seamlessly from formal to casual settings. 

Whether you’re dressed in a sharp suit or rocking a t-shirt and jeans, this watch fits right in. Its aesthetic is particularly well-suited for travelers who often find themselves moving between different dress codes. The ability to switch effortlessly between casual and formal wear makes it the ideal companion for a variety of situations.

Price & Availability 

The Grand Seiko Sport GMT SBGE255 watch retails for $6,200 new at authorized Grand Seiko retailers like Exquisite Timepieces. You might also be able to find it for a little cheaper on pre-owned or second-hand marketplaces. I saw a few examples for around $4,500 to $5,000. The model is not a limited or special edition and remains a current mainstay in the Japanese watchmaker’s Sports collection.

Conclusion

Overall, the Grand Seiko Sport GMT SBGE255 is a stunning watch, and as I mentioned in the introduction, it’s a perfect example of why you should always be open to exploring styles that aren’t typically your go-to. 

I’ve genuinely fallen for this piece. It’s bold and masculine in its design yet manages to be compact enough to fit comfortably on nearly any wrist size. Plus, it’s technically unbeatable in terms of functionality and precision – I’ll never not be impressed by the Grand Seiko Spring Drive movement.

But honestly, one of my favorite features of the Grand Seiko Sport GMT SBGE255 is the bracelet. Mainly because it’s one of just a few GS bracelets that actually comes with micro adjustment! This model’s integration of this feature is a significant improvement and one that will definitely be appreciated by anyone who values a perfect fit.

I honestly have no complaints about this watch. It’s a well-rounded, well-sized package that combines style, functionality, and comfort. My only piece of advice is to visit your local authorized Grand Seiko retailer and try it on for yourself. Seeing how it looks and feels on your wrist will help you appreciate its true charm and make sure it’s the right fit for you.