Tudor
Black Bay Fifty-Four Lagoon Blue
Ref. M79000-0001
The Tudor Black Bay Fifty-Four M79000-0001 is a 37mm dive watch inspired by the brand's 1954 Oyster Prince Submariner, featuring a distinctive Lagoon Blue dial with a sand-like texture and applied indexes. Introduced in 2025, it combines vintage aesthetics with modern watchmaking, including a COSC-certified MT5400 movement with a 70-hour power reserve and a doubled-domed sapphire crystal.
crystalDoubled-domed sapphire
braceletStainless steel bracelet
movementMT5400, self-winding mechanical, COSC-certified chronometer, 70-hour power reserve
functionsHours, Minutes, Seconds
lug width20 mm
dial colorLagoon Blue (blue with sand-like texture, applied indexes with white Super-LumiNova)
case diameter37.00 mm
case materialStainless steel
water resistance200.00 m
year2025–2026
A registered Tudor M79000-0001 carries a permanent RGATT passport: origin, history and owners, verifiable by anyone, and a documented history makes a watch easier to sell.