The latest evolution of Tudor’s beloved 37mm dive watch adds a sun-washed dial, a refined bracelet, and vintage charm for modern wrists. Tudor has once again struck gold — or perhaps seafoam — with the launch of the Black Bay 54 “Lagoon Blue”, a serene-toned twist on the vintage-inspired diver that already captured enthusiasts’ hearts in 2023. Retaining the same compact 37mm case and high-performance movement as its predecessor, this new iteration brings a splash of fresh personality in the form of a shimmering light blue dial and a polished bezel that feels distinctly summer-ready. First introduced as a nod to Tudor’s original dive watch, the reference 7922 from 1954, the Black Bay 54 redefined modern proportions by scaling down its robust heritage to something more wearable and unisex. Now, with the “Lagoon Blue” release, the Swiss brand continues its journey to redefine tool watches for a broader audience — one wrist, and one shade, at a time.
A dive into vintage proportions
When the Black Bay 54 first debuted, its 37mm case size made waves. It was a bold move in a landscape where many luxury dive watches still measure 40mm and up. But Tudor’s decision to go compact proved to be not only practical, but visionary. The smaller size didn’t compromise the watch’s capability; if anything, it enhanced its wearability across more wrist sizes without losing the tool-watch essence.
That same case profile reappears here with no mechanical changes — and for good reason. The MT5400 caliber remains the powerhouse inside, featuring a 70-hour power reserve, a non-magnetic silicon hairspring, and COSC certification that guarantees accuracy between -2 and +4 seconds per day. You’ll also find the watch rated to 200 meters of water resistance, making it fully prepared for real-world diving — or just desk diving, if that’s more your style.
For collectors and daily wearers alike, the BB54 continues Tudor’s mission to make professional-grade watches more accessible and versatile. The “Lagoon Blue” version expands on that promise with design tweaks that feel both playful and polished.
A dial that catches light — and attention
The most noticeable update, of course, is the sand-textured blue dial — a shade unofficially dubbed “Lagoon Blue,” which sits somewhere between icy turquoise and sun-faded denim. It’s a gentle hue, far less saturated than the vibrant Tiffany blue that’s become shorthand for flashy luxury, but it still turns heads. There’s an unspoken elegance to the dial’s texture, evoking sunlit waves and breezy coasts.
Paired with a mirror-polished relief bezel and applied markers with luminous accents, the entire dial feels brighter, more refined, and slightly more luxurious than its black-dialed sibling. It’s sporty without trying too hard — bold in its restraint.
There’s also something inherently joyful about this color choice. It suggests freedom, relaxation, even optimism — characteristics not often associated with dive watches, which can lean aggressively utilitarian. The “Lagoon Blue” doesn’t sacrifice performance; it simply reimagines what performance can look like.
The bracelet gets a fresh take too
Complementing the dial is a new five-link stainless steel bracelet, a departure from the three-link Oyster-style bracelet on the original BB54. The five-link design adds visual complexity and reflects more light, creating a jewelry-like presence without going full dress watch. It’s finished with Tudor’s T-Fit clasp, allowing for quick micro-adjustments on the fly — a must for comfort during warm-weather wear.
While strap options haven’t been the centerpiece of the BB line, this new bracelet iteration adds versatility. Whether paired with swim trunks or summer tailoring, the “Lagoon Blue” feels like a natural extension of warm-season style.
A modern-day miracle for vintage lovers
For those who fell in love with the original BB54, the new version doesn’t aim to replace — it complements. Where the original felt grounded in its tool-watch DNA, the “Lagoon Blue” injects a bit of flair. Some may draw parallels to Rolex’s pastel-dialed Oyster Perpetuals (yes, even the now-fabled Tiffany blue), but Tudor’s execution leans more subtle, more seaworthy.
There’s a quiet confidence in this release, as if Tudor understands it’s not chasing trends — it’s leading them. By sticking to its design language and simply expanding the palette, the brand continues to set the pace for enthusiasts seeking downsized divers with depth and personality.
And if you’re wondering whether a blue dial dive watch is gimmicky, consider this: it’s still powered by the same movement trusted in Tudor’s Pelagos and Black Bay collections. Nothing has been compromised beneath the surface — only enhanced on top.
Pricing and availability
The Black Bay 54 “Lagoon Blue” is available now and priced at $4,350 USD, consistent with the original model. It’s not a limited edition, though demand is expected to be high, especially among those looking to expand their summer rotation or collect across colorways.
For those craving the full technical rundown, here are the essentials:
The basics
Brand: Tudor
Model: Black Bay 54 “Lagoon Blue”
Reference: 79000
Case diameter: 37mm
Thickness: 11.24mm
Lug-to-lug: 46mm
Case material: Stainless steel
Dial: Sand-textured light blue
Bracelet: Five-link steel with T-Fit clasp
Water resistance: 200 meters
Lume: Hands and markers
The movement
Caliber: MT5400 (in-house)
Power reserve: 70 hours
Frequency: 28,800 vph
Winding: Automatic
Functions: Hours, minutes, seconds
Chronometer: COSC-certified
A blue wave worth catching
Ultimately, the Black Bay 54 “Lagoon Blue” is more than just a new color — it’s a statement of intent. Tudor continues to expand not by adding gimmicks or chasing specs, but by refining what already works and inviting more people into the fold.
This release is lighthearted, sure. But it’s also expertly executed. It honors the past, respects the present, and hints at a more expressive future for tool watches. And while it may not be a miracle, it’s certainly a refreshing splash in the right direction.
