When a Watch Starts Living in Your Mind
First Impressions of the Jacques Bianchi JB300 Profonde × Deepsea EDC
Every now and then, something unusual happens with a watch.
You see a picture of it, and it stays with you.
That might not sound remarkable, but after many years in the watch industry, it actually is. When you have seen hundreds — perhaps thousands — of watches, it becomes quite difficult for a new one to leave any kind of impression. Most watches are competent. Many are attractive. But very few linger in the mind.
And fewer still appear in your dreams.
That was what happened to me with the Jacques Bianchi JB300 Profonde × Deepsea EDC, a 150 piece limited edition version of the brand’s JB300, launched in late 2025, and since sold out.
I first came across the watch through a photograph. On the surface, it looked like a fairly straightforward dive watch — the sort of thing we see regularly in this category. Nothing immediately revolutionary. A diver, a rotating bezel, a familiar layout.
But for some reason, I kept coming back to it.
I found myself searching for more photographs of the watch, studying them, trying to understand what it was that had caught my attention. Why this watch? Why not any of the dozens of other dive watches released every year?
At one point, I even found myself dreaming about it.
That was when I realized something interesting was happening.
Looking Closer at the Details of Design
When I began examining the watch more carefully, the reasons started to reveal themselves.
The first thing that stood out was the shape of the case. It sits somewhere between a cushion case and a conventional round diver, but not quite belonging to either category. The geometry is softened just enough to give it a slightly vintage instrument feel.
It is the sort of case that looks familiar, but not in a way that feels derivative.
Some observers have mentioned that it carries echoes of the Citizen JP200 Promaster Aqualand, and that comparison makes sense. The JP200 is one of the classic functional dive watches, with a design language that prioritizes utility over polish.
The JB300 seems to capture some of that same spirit.
It feels like a watch designed with use in mind.
The slab sided cushion style case, is very much it’s own thing. I haven’t been able to find many that are close to it in design. It looks like a typical diver with a round bezel, yet something about it deviates just far enough that you have an unresolved open loop in your mind. And this extra brain activity is the delicious noise that you enjoy as your eyes go over what you are seeing, trying to make sense of something unresolved, yet also resolved, somehow.
The Role of Stonewashed Titanium
Another key ingredient is the stonewashed Grade-5 titanium case.
This detail plays a surprisingly large role in the watch’s personality. Instead of polished surfaces or carefully executed brushing, the JB300 adopts a deliberately rougher texture created by tumbling the finished cases in abrasive material. The stonewashed finish creates a matte, almost grainy surface that absorbs light rather than reflecting it.
The effect is subtle but powerful.
The watch stops looking like jewelry and starts feeling like equipment.
There is also something about stonewashed titanium that gives the watch a slightly individual character. The finish introduces tiny variations in texture, so each watch feels a little different. It is a small detail, but one that contributes to the watch’s tool-like authenticity.
The titanium as well adds another layer of interest. While the stone washed case gives a feeling of something old, worn, tough and heavy, your expectations are inverted when you handle the watch, and realize the featherweight nature of the titanium.
The Heritage Behind the Name
Of course, the watch is not just design.
The name Jacques Bianchi carries real history, particularly within the diving community of Marseille. Bianchi himself is known as one of the longest-serving watchmakers in the city, and over the years his workshop became closely associated with professional divers.
Among them were the divers of COMEX, the legendary French deep-sea engineering company whose watches and equipment have become part of modern diving mythology.
That heritage inevitably adds another layer of interest to the watch.
But in this case, it feels like supporting context rather than the main attraction.
Because the truth is that my reaction to the watch began before I knew any of that.
It began with the design.
The Influence of Brock Stevens
The collaboration aspect of the watch also adds an interesting dimension.
The JB300 Profonde × Deepsea EDC was developed with input from Brock Stevens, a professional diver associated with MkII, a brand whose watches I have long admired.
MkII has always approached watch design with a focus on practicality and historical awareness. Their watches emphasize legibility, usability, and purposeful design rather than spectacle.
Knowing that Stevens was involved in the project helps explain some of the decisions behind the JB300.
The underlying ingredients of the watch were already strong, but elements like the stonewashed titanium finish reinforce the idea that this watch was meant to feel like a true tool — something that could exist naturally in a working diver’s environment.
And that direction suits the watch extremely well.
Spending Time With It
The brand recently sent this JB300 over for me to spend some time with and form my impressions. Having the watch on the wrist for an extended period is always different from seeing it briefly across a table.
And the more time I spend with it, the more I appreciate the coherence of its design.
Nothing about the watch feels overly elaborate or forced. Instead, it has the quiet confidence of something that knows exactly what it is.
That quality is surprisingly rare.
The Beginning of a Journey
This article is simply a first set of impressions — a reflection on what initially drew me to the watch and why it continues to hold my attention.
Over the coming weeks, I plan to spend more time with this version of the JB300 , which at this point unfortunately, is sold out. However, this period of exploring it more thoroughly and sharing further thoughts as they develop will go some way to help you to understand what this ambitious young brand will be creating in the future.
And eventually, I intend to take it where it was meant to go.
Into the ocean.
Because a watch like this deserves to be experienced not just on the wrist, but in the environment it was designed for.
During this year’sWatches and Wonders week in Geneva (2026), the brand will also be appearing at Chronopolis, and I am very much looking forward to meeting the people behind Jacques Bianchi Marseille — co-founders Simo Tber and Fabrice Pougez — to learn more about the thinking behind this watch and the brand itself.
In the meantime, you can explore more about the watch and the brand at:
https://www.jacquesbianchi.com
For now, consider this the beginning of the journey.
More to come.