Scubapro's S600 model is built with airflow and easy breathing as the first priority. With a design centered around performance and feel, this is among the best Scubapro has to offer.
With built-in resistance adjustment, you can get exactly the breath you want during the dive, in addition, there is built-in and adjustable venturi control, for easier and faster air supply and safety against freeflow.
Built in solid plastic and chrome plated brass, the S600 is a solid and safe second stage, even in cold conditions.
With a front built in two solid parts, the internal mechanisms of the second stage are protected against impact or the like.