Octopus Compact uses the same casing as the Compact model, the only difference being the yellow front cover; The hose is also yellow and is longer (100 cm against the standard 76 cm);A flow of pilot air is channelled to the mouthpiece by injection, enhancing the performance;The upper part of the body has a flow deviator that acts on the Venturi effect, with dive/pre-dive function; The performance is extremely high, the calibration is regulated so that the inhalation effort is slightly greater than on the Compact