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Maximum wrist size 8".
The Tudor Black Bay 54 Lagoon Blue Ref. M79000-0001 is a stunning 2025 release that reimagines vintage dive watch heritage with a refreshing modern twist. Featuring a compact 37mm stainless steel case, this model pays homage to Tudor’s original 1954 dive watch while introducing a vibrant lagoon blue dial and bezel that give it a distinctive, contemporary flair. The sunray-finished dial plays beautifully with light, adding depth and dynamism to the minimalist design. Powered by the COSC-certified Tudor Manufacture Calibre MT5400, it delivers exceptional accuracy and a 70-hour power reserve. The watch is fitted with a rivet-style bracelet that nods to Tudor’s historic designs while benefiting from modern comfort and durability. Complete with its original box and papers, this Black Bay 54 Lagoon Blue is not only a reliable tool watch, but also a collectible piece that blends timeless aesthetics with the bold color language of the modern era.
