The XTX50 is designed for demanding divers who want the benefits of a feature-rich regulator at an affordable price. This popular regulator features four medium-pressure ports mounted on a rotating turret, providing optimal hose routing and eliminating sharp bends in the hoses. The XTX50/DS4 performs the same as the XTX50 but uses a different first stage. The DS4 first stage does not have the rotating turret found on the XTX50 and offers one high-pressure port. This compact first stage is a proven and trusted choice adopted by the technical diving community worldwide.