This is the Mares SXS 62X 1st and 2nd Stage Diving Regulator Features: 1st stage Dynamic Flow Control (DFC) LP port for high air flow at any depth Pre-oriented LP and HP ports Auto Sealing Technology (AST) for a watertight first stage Lighter, more compact diaphragm Pearl chrome finish 2nd stage The smallest, most compact Mares second stage Made of ultra-lightweight technopolymer V.A.D system with a "curved" bypass tube for maximum airflow Can be used on either the right or left side Lateral exhaust tube for better visibility in all diving positions Easy-to-use, soft exhaust button Superflex hose The SXS 62X diving regulator is the new, ultra-compact regulator from Mares and one of the most compact second stages on the market. It is ideal for divers who travel, but also for those looking for a more streamlined, lightweight piece of equipment. It is paired with the reliable, durable 62X first stage. SXS stands for Second eXtra Small, emphasizing the extreme lightness and compactness of the second stage. This versatile regulator is an excellent choice for any side configuration. With a few simple operations, the user can easily configure this regulator for right or left-sided use.The compact 62X first stage boasts innovative features such as AST (Auto Sealing Technology), a pneumatic system that protects against water entering the first stage, and the proven Natural DFC System (Dynamic Flow Control), which ensures high, constant airflow at any depth. A great diving regulator which is light, versatile, and offers exceptional performance.