Set it and forget it.
The last thing you need to worry about on the dive is your breathing
system. The GT 3 puts you in total control with its patented Dynamic
Adjustment feature. Whether you're snorkeling to your dive site or
working a current on your favorite deep wreck, you can quickly adjust
the GT 3 to behave precisely the way you want, then let it do the work
as it automatically readjusts with changes in depth. Now featuring our
D.V.T. (Dry Valve Technology)

• Diver adjustable inhalation effort

• Patented Dynamic Adjustment automatically maintains inhalation effort throughout the dive

• Paired with our popular CDX-5 Compact Over-Balanced Diaphragm First Stage with Enviro Kit, featuring D.V.T. (Dry Valve Technology)