The arrival of Guillaume Néry, holder of several constantweight free-diving world records, as a member of the BALL Explorers Club in 2006 was for BALL Watch an opportunity to focus its efforts on the development of a line of timepieces implementing the brand's watchmaking expertise for underwater diving. BALL diving watches were previously included in the "Engineer Master II" series. However, the concentrate of watchmaking technology in the new Engineer Hydrocarbon DeepQUEST means that this explorer's watch fits naturally in the "Engineer Hydrocarbon" family.