The Tudor Black Bay 54 Lagoon Blue Edition

Since the introduction of the Black Bay collection in 2012, Tudor has never ceased to expand this range of dive watches, moving up and down in size to now offer a whole range of options. If we look exclusively at the proper dive models, there’s the classic Black Bay 41mm, the smaller Black Bay 58 (39mm) and, since this year, the bolder Black Bay 68 (43mm). In 2023, Tudor unveiled its most compact version, the 37mm Black Bay 54, which caused quite a sensation with its faithful vintage look and thin case. Now, ready for summer 2025, it appears in an unexpected version that’s far away from vintage codes to move into the current “daring watches” sub-collection, next to the Flamingo Blue and Pink Chrono. Meet the new Black Bay 54 Lagoon Blue.

On paper, not much has changed for the Black Bay 54, at least when focusing exclusively on the main specs. The case is the same as the black version of 2023, retaining everything I personally loved about it; 37mm diameter for the vintage vibe (or for a feminine audience), a thickness of only 11.24mm and a short measurement on the wrist at 46mm. Still made of steel, keeping the classic brushed surfaces with polished bevels and flanks, the BB54 Lagoon Blue is still a capable dive watch with screw-down crown, screwed back, domed sapphire crystal and 200m water-resistance. On these sides, nothing has changed.

What’s new then? Well, the bezel first. Instead of a classic black anodised aluminium insert with diving scale, the Black Bay 54 Lagoon Blue inaugurates an unprecedented mirror-polished steel insert with a tone-on-tone 60-minute scale in negative relief, with a matte surface for contrast. No doubt that this will drastically change the look and feel on the wrist, making this model more luxurious, less dive-focused, but also more prone to scratches. What this BB54 Lagoon Blue loses in tool feel, it gains flair. The other obvious change is the dial. First, it brings a new, summer-oriented colour named Lagoon Blue as well as something unseen before on a Black Bay, a sand-like texture. The Snowflake handset is, as you’d expect, retained and here made in polished metal, just like the applied markers, with both being filled with white SLN. The printings and minute track are executed in dark blue.

Under the caseback, no changes either. The Black Bay 54 Lagoon Blue retains the calibre MT5400, a movement made by the Tudor/Kenissi joint venture. It’s the same base movement as most Black Bay watches, with a 70h power reserve, a transversal balance bridge and a regulator beating at 4Hz, with variable inertia balance and a non-magnetic silicon hairspring. This automatic movement is chronometer-certified by the COSC (no Master Chronometer certification here), yet with more stringent standards from Tudor, with a -2/+4 accuracy range.

Another difference with the classic black version, this new Black Bay 54 Lagoon Blue is exclusively available on steel bracelet, as no rubber option has yet been announced. Also, no more 3-link rivet-style bracelet here, but a 5-link Jubilee one instead. Brushed and polished, again less tool-oriented than the classic riveted bracelet, reinforcing the vocation of this edition, it comes with the brand’s practical T-Fit micro-adjustment system.

Available from boutiques and selected retailers, this Tudor Black Bay 54 Lagoon Blue isn’t announced as limited, but like other models from the “daring watches” sub-collection, it shouldn’t be the easiest to acquire. It is priced at CHF 3,900 or EUR 4,240. More details at www.tudorwatch.com.