Few dive watches carry the historical weight of the Blancpain Fifty Fathoms. Created in 1953, its combination of exceptional water resistance, a highly legible luminous display and a rotating timing bezel helped establish the vocabulary of the modern purpose-built diving watch. More than seven decades later, the Fifty Fathoms remains central to Blancpain's identity, but this 38.2mm Automatique brings the concept into notably more compact territory while retaining the technical characteristics expected of the collection.

Dating to 2025, this ref. 5007 1130 B64A pairs a polished stainless steel case with a sunburst black dial, unidirectional sapphire bezel and black rubber strap. Particularly appealing is its individual Number 50 designation. The model itself is not a limited edition, but the watches are individually numbered, making 50 an especially fitting number for a Fifty Fathoms. Inside is Blancpain's automatic calibre 1150, an unusually slim 3.25mm movement providing an impressive 100-hour power reserve from its twin-barrel architecture. With 300 metres of water resistance and a sapphire display back, this is a smaller Fifty Fathoms without sacrificing the mechanical or functional substance of the collection.