The S620 Ti air-balanced second stage is Scubapro's top performer. Its rugged reinforced techno-polymer case and front cover with stainless steel frame create a sleek modern look and, most importantly, are designed to withstand years of aggressive diving. The full titanium inlet tube is ultra-light, the large purge button improves water circulation, and the new exhaust tee increases performance while directing bubbles out of the field of view.  
The S620's large diaphragm inside a compact casing provides maximum breathing sensitivity, while a diver adjustable inhalation control enables personal adjustment of breathing effort. Additionally, this second stage comes with a comfortable orthodontic mouthpiece to reduce jaw fatigue and gum irritation.   
Airflow at 2900psi/200bar: 1850 l/min - 66 SCFM.