This dive regulator is an OCEANIC USA product. To renew the high level range, Philippe Frasca proposed to revisit an old Oceanic success, the « DELTA », and to turn it a modern and intemporal product. The second and first stages have been designed together to create a necessary consistency, and all parts have been shaped so that a maximum of common parts could be kept between high and medium level regulators (DELTA 5 and ALPHA 10).