Check the listing for details. SEAC MX100 Int Regulators - 1st and 2nd Stage Set (0350071000004A). Condition: New. Listed at 358.99 USD. MX100 combines safety, high performance, and a robust structure suitable for all divers, even beginners who are looking for a reliable diaphragm regulator. The balanced first stage has a heat exchange system, designed especially for cold water. The removable stainless steel valve seat can easily be replaced during maintenance. The first stage has 2 HP and 4 LP ports. The second stage has a simple Venturi effect lever making it is possible to adjust easily. The OWS front cover design system prevents free-flow even in strong currents. The chromed brass first stage of the MX100, as well as the robust simplicity of the second stage, not only significantly reduces the overall weight of the regulator but also maintenance costs. Available with DIN 300 BAR and INT 230 BAR. All SEAC regulators are Made in Italy. Features High performance, lightweight regulator, great for Sport SCUBA divingBalanced 2nd stage is lightweight with low-friction mechanics for easy, natural breathingEnvironmentally isolated, balanced diaphragm 1st stage delivers consistent performance as tank pressure changes2 high-pressure outlets and 4 low-pressure outlets2nd stage Venturi control