Lightweight and reliability is what the Mares Rover 15X Regulator provides for the diver, with the regulator weighing only 35.45 oz. (1,005 g) with the hose. Reliability does not mean lack of high performance with the combination of the Mares 15X 1'st-stage and the Rover 2'nd stage. Comfort comes with the Mares 29.5" (75 cm) long Rubber Hose. Another unique feature of the first-stage is the dynamic flow control (DFC). The DFC system minimizes the intermediate pressure drop during inhalation. The 15X first stage guarantees a stable flow of air, even under extreme conditions. The first stage is equipped with 4 LP ports with 3/8" and 2 HP 7/16" ports for attachment of a pressure gauge or air integrated console.