Zeagle Envoy II OctopusHigh performance with free flow control. The Envoy II Octopus has a Venturi Control Lever that allows the diver to set the octopus 2nd stage in the Pre Dive position until needed. This is very important in Octopus regulators, since the Pre Dive position is much more resistant to Venturi free flows that can sometimes result in significant air loss during a dive. Hard to miss, the Envoy II Octopus comes with a bright yellow facing thats easily spotted