Following the "Fifty Fathoms" military dive watch developed in 1953, this is Blancpain's diver series. The "Aqua Lung" was also a representative sports watch of Blancpain included within it.

Later, the Aqua Lung was redesigned in 1999 and incorporated into Blancpain's sports series, the "Leman" collection. It made a sophisticated reappearance, deliberately omitting the rotating bezel characteristic of the original model and clad in a satin-finished stainless steel case. Then, in 2005, as a commemorative model for Blancpain's 270th anniversary, the current "Leman Aqua Lung Large Date" appeared. By increasing the case size to a diameter of 40mm and equipping it with a "Large Date" at the 6 o'clock position, its practicality was significantly enhanced.