The lightweight techno-polymer S360 is an air-balanced second stage similar to the S560 but with pre-tuned inhalation backed by a simple Venturi-Initiated Vacuum Assist (VIVA) switch for divers who prefer to keep their reg systems simple. It breathes smooth and easy.
S360 Second Stage:
Air-balanced valve smoothes out the inhalation effort when diving at varying depths and supply pressures.