The FR-02 Second Stage Has both a Venturi Control Lever that allows the diver to set the 2nd stage in the Pre-Dive position until needed and Tuner adjust to allow the diver finer control over breathing perormance.

This is very important in 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.The FN-02 comes with a Yellow cover and 27" hose.