In 1956 Ervin Piquerez SA designed the "Super Compressor" watch case that, with its unique sealing method, set it apart from other dive watches. It's also said that Aquastar circa 1960 introduced watches with rotatable chapter rings to mark elapsed time. Twin-crown dive watches with rotatable chapter rings were the rage in the 1960s.
The Genesis collection was born of our desire to recreate the legendary tool watches issued to Italian frogmen in the 1950s. While case and dial design was based on the Rolex Reference 6152, case diameter was reduced to 44mm from the original 47mm, and case shape was revised for better fit.
The Ascent is a spinoff of the Genesis, that was based on the Rolex Reference 6152 worn by Italian frogmen in the 1950s. The idea was to come up with an improved tool watch - one that's slimmer and therefore more versatile, and that's made of a material that would age well with minimal maintenance. Brass was chosen for the Ascent.