By combining the high-performing MK25 Evo first stage and the S620Ti second stage, Scubapro created an all-purpose, all-conditions regulator set!
 
The inner mechanism is thermally insulated by the patended XTIS, delaying ice formation and improving cold water resistance
The chrome plated brass body of the air balanced flow-through piston provides constant airflow
The technopolymer case and front cover with stainless steel of the second-stage enables it to withstand years of aggressive diving