Airain has released a retrospective overview highlighting the historical milestones of the brand since its founding in 1934. The communication focuses on the brand's long-standing connection to aviation heritage and its commitment to crafting reliable chronographs. It serves as an educational summary of the brand's legacy within the watchmaking industry. The update details two of the brand's most significant historical models: the Type 20 and the Sous-Marine. The Type 20 was originally developed in the early 1950s for the French military and is noted for its signature flyback mechanism. The Sous-Marine, introduced in 1962, is recognized for its underwater exploration capabilities and the inclusion of the innovative Parmentier crown system.