Cressi Compact / MC9 Its strengths lie in its extreme lightness,excellent performance, very easy maintenance and affordable purchase price.-Self-lubricating jacketed cylinder -Removable stainless steel nozzle Anti-pressure drop pneumatic spring -Sintered cup filter -4 low pressure outlets -2 high pressure outlets2nd stage XS COMPACT: body in techno-polymer, with dive-pre dive adjustment.Cressi Octopus Compact All the parts of Compact , most of which are patented, can be found on this regulator. The performance is extremely high, although the calibration is regulated so that the inhalation effort is slightly greater than on the XS Compact , to prevent any self-regulating possibility when it is used as a spare regulator. Octopus XS Compact suits all the Cressi first stages perfectly and all the first stages with an intermediate pressure between 9 and 10 bar.