This is the XS Scuba Inspire Octo Octopus Scuba Diving Regulator Features: Hi-viz yellow front cover and hose Pneumatically-balanced to provide superior breathing performance The Inhalation Control Knob adjusts the inhalation effort An integrated venturi lever allows the diver to turn off the venturi when the regulator is out of the mouth. This prevents unwanted freeflow. The 36 Miflex braided hose is lightweight and pliable For the serious diver who believes that the octopus needs to perform as well as the primary, the Inspire Octopus is the one for you."