Whats in the box:1st Stage, 2nd Stage and LP Hose 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. X650 Second Stage
The X650 is an unparalleled regulator for all types of dives and divers. Its features and design prove why this regulator has a corner on the diving market. It has a straight coaxial valve, a wider exhaust valve than others regulators, and requires 20% less effort when exhaling. The secret to the X650 is SCUBAPRO's ingenious idea to put the diaphragm and exhaust valve below the regulator's mouthpiece to reduce the chances of the diver experiencing jaw fatigue.