Blancpain Fifty Fathoms Bathyscaphe Steel — Black Dial NATO | Ref. 5000 1110 NABA

When Blancpain introduced the Fifty Fathoms in 1953, the brand — founded in 1735 as the world's oldest watchmaker — helped define what a professional diving instrument could be. More than seven decades later, the Bathyscaphe variant carries that legacy forward in its most accessible and arguably most wearable form: a 43 mm satin-brushed steel case worn on a black NATO fabric strap, the combination favored by military and civilian divers who prize function over formality. The reference 5000 1110 NABA is the pure expression of this tradition, stripped of any superfluous ornament and focused entirely on performance.

The movement is the in-house Calibre 1315, one of the industry's most respected modern automatic ebauches. Built on a silicon balance spring that resists magnetism and temperature variation, it delivers a 120-hour power reserve from three stacked barrels — a feat of engineering that ensures days of autonomy for extended expeditions. The unidirectional rotating bezel features a ceramic insert with Liquidmetal hour-markers that are harder than conventional metal yet bond seamlessly to the bezel surface, guaranteeing legibility and resistance to scratching under demanding conditions.

Water resistance is rated to 300 metres — 30 bar — satisfying professional diving standards with considerable margin. The 43 mm case diameter strikes a modern balance between presence and wearability, while the 13.4 mm case thickness keeps the profile admirably low on the wrist. Whether acquired as a serious tool watch or as the collector's preferred daily companion, the Bathyscaphe on NATO strap is the Fifty Fathoms at its most elemental and most honest.