Scubapro MK25 or S600 Regulator updated popular

MK25 First Stage The MK25 first stage offers a machined, marine-grade chrome plated body and balanced composite/stainless steel piston that would make any diver proud. It demonstrates SCUBAPRO's dedication to quality and creating positive diving experiences. This first stage adapts to external pressure changes and comes standard with the Thermal Insulating System (TIS), which keeps your first stage from freezing up and malfunctioning in cold water conditions. The MK25 has two high-pressure ports and five low-pressure ports. S600 Second Stage Because of the S600's versatility, it can meet the diver's needs as frequently as the diver changes dive sites. The S600 is constructed of a chrome-plated brass and technopolymer valve housing, a linear air-balancing valve, and a top notch air-balancing system. This regulator's air-balanced linear-flow valve allows the diver to use less energy while breathing underwater; it makes breathing during a dive as simple as well, breathing in and out.