Sea Elite RX330 Regulator Package Simple construction and extraordinary toughness are matched by outstanding performance. A classic, unbalanced pistion first-stage offers 3 low-pressure ports, 1 high-pressure port, and the simplicity of one moving part. A rugged, lightweight, non-adjustable second stage with a pillow-bite mouthpiece and venturi assist rounds out this great economy regulator. Combined with a unique high-flexibility hose, this is one of the most comfortable regs you can buy without a swiveling second-stage! This Package includes: Sea Elite RX330 Regulator, SX30 Octopus and your choice of Instrument.