Water, Air, Earth and Fire correspond to and are expressed through the four core Blancpain collections.

The Air Command collection is expressed through Air – Inspired by the Legend

The Air Command celebrates a fascinating era of our history – marrying vintage style with watchmaking's latest advances. A legendary flyback chronograph, whose reputation has flourished over the decades.
It's a watch whose origins are shrouded in mystery and whose history we know little about apart from small snippets and anecdotes – at times conflicting – that we have been able to collect from various sources. It is indeed "Inspired by the Legend".