Tudor 2025 The Black Bay 54 “Lagoon Blue” 37mm M79000-0001 Full Set, Stainless steel on Jubilee Bracelet, Full Set Warranty 2025
The Black Bay 54 “Lagoon Blue” evokes somewhere warm, where the sun shines onto waves of azure water and white sand beaches. A watch can do more than tell time, it can shift your mindset. Its magical combination of perfect proportions with its 37mm case, “Lagoon Blue” sand-textured dial, and mirror-polished bezel, as well as its comfortable five-link bracelet transports its wearer to a hammock laced up between two palm trees right where the water meets the sand.
The Black Bay line was conceived with the past in mind. The Black Bay 54 is perhaps the most true-to-form Black Bay to have been created thus far. The Oyster Prince Submariner reference 7922 is a formidable candidate to draw inspiration from, as it was known to have been evaluated and consequently adopted by the French and US Navies and widely used by diving professionals. The Black Bay 54 follows this tradition with thoroughly modern touches, like a subtle sand-textured dial and a “T-fit” clasp for the perfect fit. And of course, the cutting-edge Manufacture Calibre MT5400.
Case
37mm steel case with polished and satin finish
Lugs: 20mm lug width
Case thickness: 11.2mm
Movement
Manufacture Calibre MT5400 (COSC)
Self-winding mechanical movement with bidirectional rotor system
Power Reserve
Power reserve of approximately 70 hours
Winding Crown
Screw-down crown with the TUDOR rose in relief
Waterproofness
Waterproof to 100m (330 ft)
Bezel
Stainless steel bezel with polished and satin finish
Dial
Blue, domed and textured
Crystal
Domed sapphire crystal
Bracelet
Five-link stainless steel bracelet with polished and satin finish, with TUDOR “T-fit” clasp






















