Hands On: Trematic T-Five Beigua Maris Review

May 2, 2026

In our hands today, we have the latest release from Trematic: The T-Five Beigua Maris.

The days of a single calendar release during what was Baselworld (now Watches and Wonders) are long gone and now there are watch releases weekly, if not daily, it seems. So how do you stand out in an increasingly saturated market?

The mainstream brands have the bigger marketing budgets so their releases are extremely visible (and also open to sharp criticism). Whereas microbrands and revival heritage brands need to be more and more creative to capture the imagination of watch collectors.

Trematic T-Five Beigua Maris Review: Case, Size and Movement

So what have Trematic done here with the T-Five to stand out?

First, they made a watch out of grade 5 titanium. Most brands avoid using this because of its higher costs to acquire, work, and finish. The more commonly used grade 2 titanium is entirely made of titanium whilst grade 5 is composed of 6% aluminum and 4% vanadium. These two additional materials are highly resistant to corrosion and strong which reinforces the hardness and durability of the titanium they are mixed with.

Secondly, they made a dive watch that isn’t 42mm or bigger. The T-Five Beigua Maris measures at 39mm with a 45.5mm lug-to-lug. Arguably in the mainstream brands, only TUDOR are providing wearable dive watches under 40mm. The proportions are what stand out. It sits flat, doesn’t overhang, and works just as well on a smaller wrist as it does on something larger. That’s not something you can say about most divers in this category.

Then add three colour options: Marina, Desert and Shadow. Marina leans into teal, Desert brings in warmer beige tones, and Shadow keeps things simple in grey. The bezel markings on Marina and Desert match the dial, which works well in person. The ultra-bombé sapphire crystal is a much appreciated retro touch, harking back to the diver models of the 1960s.

And the movement? All three are powered by the La Joux-Perret G101. 4Hz, 68-hour power reserve. Quietly one of the better movements you’ll find at this price point, and a step up from the usual options most brands rely on.

Where does the name come from?

Beigua Maris refers to the seashores of Mount Beigua in northwestern Italy. It’s an area where the mountains meet the Mediterranean, and it’s also known for its titanium reserves. Not just a name pulled out of nowhere. It ties back to the material choice.

If you’re buying for the name, it’s not going to be on your list. If you’re looking at what you’re getting for the money, it’s a different conversation.

Grade 5 titanium isn’t common at this level. Neither is a 39mm diver that wears properly. Then you’ve got the La Joux-Perret G101 with a 68-hour power reserve, which outperforms a lot of the usual movements in this price bracket.

FAQ

Is the Trematic T-Five Beigua Maris a good everyday watch?

Yes. The combination of titanium, compact sizing and a 68-hour power reserve makes it practical for daily wear. It’s light enough to wear all day, with enough presence to not feel like a compromise.

How does the La Joux-Perret G101 compare to Sellita or ETA movements?

The G101 offers a longer power reserve at 68 hours and is generally positioned a step above standard entry-level movements. It’s less common than Sellita or ETA, which adds a bit of interest without sacrificing reliability.

Why is grade 5 titanium better than grade 2?

Grade 5 titanium is harder, more durable and more resistant to corrosion due to the addition of aluminium and vanadium. It’s also more difficult to machine and finish, which is why it’s less commonly used at this price point.