Aqualung Legend Supreme ACD Reg with Legend Octo & Console Upgrades Package Aqualung Legend Supreme Acd Regulator The Legend Supreme is the cold water version of the Legend & can be identified by the "snowflake" laser-etched into the case. It is matched with the same Legend first stage as found on the other Legend models with additional coldwater features. The Legend second stage is a pneumatically balanced design that does not require diver adjustment. The Legend is matched exclusively with the Legend over-balanced diaphragm first stage. Auto-Closure Device (ACD) seals the regulator’s inlet fitting, both Yoke & DIN, as soon as the regulator is removed from the cylinder valve. This will keep water & contaminants out of the regulator’s first stage during rinsing & storage. It allows the first stage to maintain peak performance over time The first stage will retain its internal lubrication longer Makes the first stage safer for nitrox use The new ACD feature coupled with the environmental dry chamber, results in a first stage that is completely sealed off from the environment. Over-balanced diaphragm design delivers superior breathing performance even at increased depths Environmentally sealed dry chamber helps resist freezing & keeps the internal mechanism clean & dry Specifically adjusted to pass the stringent European Standards for cold-water regulator performance Aqualung Legend Octopus The Legend Octopus is a pneumatically balanced second stage with a high-visibility yellow cover ring & 39" yellow hose. It is the ideal compliment to all over-balanced Legend Series Regulators & the Titan LX. Compact-size with all the superior breathing characteristics of the Legend series Air balanced & ideally suited for the Legend over-balanced first stage Diver-controlled Venturi Adjustment Switch (VAS) reduces sensitivity to free flow on the surface & provides maximum airflow at depth Designed for use in cold water