The SCUBAPRO MK17EVO 2 S600 Regulator Set features a NEWLY designed sealed diaphragm first stage and an air-balanced second stage with years of proven performance. The MK17 EVO 2 is more compact and light with a NEW forged body, dry chamber with a twin spring layout for increased reliability and compactness. The S600 features a reinforced technopolymer casing and stainless steel front face and ring. It provides a steady, effortless flow of air, regardless of depth or water temperature, in the most demanding dive conditions. Product Features: First Stage NEW design allows it to be substantially smaller and lighter than the MK17 EVO and the MK19 EVO. Design is based on a forged brass body and a dry chamber with a twin spring layout for compactness and reliability. Sealed balanced diaphragm design makes for the ultimate compact first stage for cold water or contami?nated diving conditions. Air-balanced diaphragm delivers consistent and ef?fortless airflow, regardless of depth, tank pressure, or breathing rate. Dry chamber is completely environmentally sealed with a diaphragm that keeps out contaminated water. The rib is designed to enhance heat exchange, making the first stage cold water-proof. Two opposing high-pressure ports positioned on a 15? angle allow the first stage to be positioned either up or down, plus provide an optimal hose/transmitter layout. Due to the high-pressure port positioning, a transmit?ter can easily be installed. Weight: INT 232: 797g ; DIN 300: 572g Intermediate pressure (230 bar): 9.2-9.8 Second Stage Air-balanced valve smoothes out the inhalation effort when diving at varying depths and supply pressures Metal valve housing (barrel) is able to withstand years of aggressive diving User controls include a diver-adjustable inhalation effort knob and Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch Super-flow hose features an oversized bore that allows more air to flow on each inhalation Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn’t inhibit airflow CE certified according the latest EN250A European Standards for all diving conditions, including extreme cold water. Weight (without mouthpiece): 200g. Available in: INT or DIN