Every now and then, a watch comes along that has all the right ingredients but somehow flies under the radar. That’s the case with the Glycine Combat Sub, a Swiss-made diver that should easily be a headline act in any discussion for the best $500 diver, yet it’s not very popular…
It has brand heritage dating back over a century, solid Swiss build quality, a reliable automatic movement, and a design that’s both distinctive and wearable. And still, it remains criminally underrated.
Maybe it’s because the Combat Sub doesn’t chase hype or scream for attention. It’s not a limited edition or a microbrand special release. It’s just quietly excellent. And in today’s world of dive watches, that’s a rare and refreshing thing.
A Century of Swiss Heritage: Glycine’s Story
Before diving into the specs, it’s worth appreciating the history behind this watch. Glycine has been around since 1914, and they were doing innovative things long before many modern “heritage” brands existed.
They were the first to mass-produce automatic watches, beating out even the likes of Rolex and Blancpain when John Harwood’s automatic patent expired in 1931. Then, in 1953, they released the Airman, the world’s first watch capable of tracking two time zones, a year before Rolex debuted the GMT-Master.
That’s serious heritage, and it’s part of what makes the Combat Sub such a compelling option if you’re shopping for the best $500 diver with real roots in Swiss watchmaking.
Glycine Combat Sub 36 Dimensions
Case size: 36mm
Lug to lug: 42.5mm
Thickness: 12mm
Lug width: 18mm
Case: Mixture of polished and brushed surfaces
Dial: Sunburst Blue Dial
Crystal: Sapphire crystal with AR coating
Movement: GL224 (Sellita-based)
Water Resistant: 30 ATM / 300m
Strap: Solid stainless steel strap
What Makes the Combat Sub the Best $500 Diver
The Glycine Combat Sub feels like one of those watches that quietly nails every aspect without compromise. It’s not about reinventing the wheel, but refining it. It pretty much has everything you’d want in a diver, including a really solid price.
For around $500, you’re getting a Swiss-made diver from a legitimate heritage brand, the GL224 automatic movement based on the Sellita SW200, 300 meters of water resistance, a sapphire crystal with anti-reflective coating, a solid link bracelet with solid end links, and size options of 36mm, 39mm, or 42mm. Each one of those features on its own is rare at this price point.
Combined, they make a strong case for why this could be the best $500 diver available right now.
For me, it’s one of those no-brainers that is really easy to recommend to both watch-enthusiast and your average consumer. It really doesn’t matter if you’ve got high-end watches in your collection, or just starting out with an F-91w, the Glycine Combat Sub holds its ground.
Glycine Design and Combat Character
What sets the Combat Sub apart is that it doesn’t look like a copy of anything. There’s a hint of Submariner familiarity, but not enough to make it feel derivative.
The inner 24-hour ring adds a subtle field watch vibe, while the date window at six o’clock gives it perfect balance and moves it further away from being just another homage. It’s little things here and there that comfortably pull this Glycine away from your typical submariner homage. Well, that and the heritage that it brings to the table.
The hour hand takes inspiration from the classic Mercedes style but simplifies it for a cleaner, more purposeful look. A slight variation with the rectangular seconds tip as opposed to a circular one just adds the right amount of character. The blue dial variant, in particular, captures that perfect mix of vintage and modern energy that makes it such an easy watch to enjoy. It doesn’t need to shout; it’s confident in its simplicity.
And it’s that term, simplicity, that describes the Glycine Combat Sub rather well. It is an extremely down-to-earth timepiece that’s not inclined to align itself with hype, but rather, function.
On the Wrist
This is where the Combat Sub really shines. The 36mm version I’ve been wearing hits the sweet spot for smaller wrists, with a 12mm thickness and a tidy 42.5mm lug-to-lug that keeps it compact and balanced. It feels light and refined, a refreshing contrast to the bulky, overbuilt divers that dominate this price range.
For those with larger wrists, the 39mm and 42mm versions carry the same proportions and charm. That kind of sizing versatility isn’t common among affordable dive watches, and it’s part of what makes the Combat Sub one of the best $500 divers for almost anyone. Just an FYI, the next diver that offers a selection of case sizes is the Christopher Ward Trident, which costs twice as much.
The bracelet is solid and comfortable, though the butterfly clasp is a weak spot. It looks sleek but sacrifices functionality since there are no micro-adjustments or dive extensions. Although I must say I don’t understand the decisions for brands to go with butterfly clasps on tool watches. It just doesn’t make any sense from both a design and a practicality perspective.
Still, that’s a small complaint in the bigger picture of how well this watch wears.
Best $500 Diver: Everyday Versatility
What I love most about the Combat Sub is how easily it fits into daily life. It’s just as happy paired with jeans and a t-shirt as it is slipping under a shirt cuff. The slim profile and classic proportions make it a genuine all-rounder. As always, any diver that wears well on my skinny 6 inch wrists will always be a cause for celebration. And I’ve got to say the Glycine Combat Sub fits the comfort bill extremely well.
If you want a piece that brings together vintage charm, modern specs, and real comfort, this could be your perfect everyday diver. The best $500 diver isn’t just about the spec sheet, it’s about wearability, and this one delivers beautifully – on both ends.
Competition?
The sub-$500 dive watch market is rather crowded, but not all that competitive once you really start looking. Since the Seiko SKX was discontinued, there have been plenty of contenders, but few that feel as well-rounded as the Glycine.
Despite the Seiko’s 5KX, Orient’s Kamasu, and Citizen’s Promaster all being great watches, they fall short somewhere. Regardless whether it’s mineral crystals, less robust bracelets, lower water resistance, or bulky dimensions, they all have trade-offs. Even many microbrands are now pricing themselves well above $600.
That’s why the Glycine stands out. It’s not chasing hype, and it doesn’t rely on marketing gimmicks. It’s simply a well-built, Swiss-made automatic diver that gets everything right. Truth is, when it comes to value, it’s hard to argue against it being the best $500 diver on the market right now.
Final Verdict: It is the Best $500 Diver
The Glycine Combat Sub proves that a great watch doesn’t need hype. This little diver is reliable, thoughtfully designed, and deeply rooted in Swiss watchmaking history. Truth be told, if you browse through the more-seasoned watch subs on Reddit, you’ll find the Glycine Combat Sub popping up more than a handful of times.
While it isn’t flashy, nor is it “hyped”, it is a diver that earns your appreciation the more you wear it. If you’re after something honest, durable, and well-proportioned, this might just be your answer to the best $500 diver question.
Mido Ocean Star 39: Closing Thoughts
Aesthetics: The Glycine Combat Sub carries a timeless look that blends classic dive watch DNA with just enough individuality to stand out. Its clean dial layout, thoughtful proportions, and subtle vintage touches make it feel far more expensive than it is.
Comfort: On wrist, the Combat Sub wears beautifully thanks to its slim profile and balanced case dimensions. Whether you go for the 36, 39, or 42mm version, it feels light, secure, and easy to wear all day without fatigue.
Price: For around $500, you’re getting a true Swiss-made automatic diver with impressive specs and real heritage behind it. In today’s market, that level of value and authenticity is becoming increasingly rare.
