This is the Mares Atlas ADJ 62X TBP 1st and 2nd Stage Diving Regulator Features: FIRST STAGEThe new 62X TBP first stage is the first from Mares to be equipped with a dual piston, anti-freeze kit. The 62X first stage is also equipped with AST (Auto Sealing Technology), which protects against water entering the first stage, and uses a DFC (Dynamic Flow Control) system which ensures high, constant airflow.The main features of the 62X first stage are:a A T.B.P. system for improved performance during cold water divesa A DFC LP port for high air flow at any deptha A.S.T. technology to prevent water entrya Pre-oriented LP and HP portsa A compact diaphragm first stagea A pearl chrome finish SECOND STAGEThe new Atlas second stage features a PAD (Pneumatically Assisted Design) system in combination with a VAD (Vortex Assisted Design) system patented by Mares. This synergy allows for high airflow, offering smooth, comfortable breathing at all depths and in extreme temperatures. With no moving parts inside the bypass, the potential formation of ice crystals when diving in cold water is not a problem.The Atlas second stage is equipped with a large, pivoting purge button and a knob for easy adjustment of breathing comfort, even when wearing gloves. The Atlas regulator uses a Superflex low-pressure hose which, thanks to its light weight and flexibility, guarantees high comfort during use.The main features of the Atlas second stage are:a All Metal technologya A V.A.D. system for natural breathing at any deptha Adjustable breathing comfort to meet the diver&';s needsa P.A.D. - Pneumatically Assisted Design; the second stage valve is designed and manufactured for pneumatic operation, minimizing the spring load and, consequently, inhalation efforta A large, pivoting exhaust button which is easy to use, even with thick glovesa High airflowa A 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.