When choosing a scuba regulator, there are several key features to consider. These features can affect the performance, comfort, and durability of your regulator, and can vary widely between models and brands. By understanding the differences between these features, you can make an informed decision about which scuba regulator is right for you.

An adjustable second stage for a regulator allows the diver to adjust the breathing resistance to their individual needs, which can improve breathing comfort and reduce fatigue. It can also help to conserve air consumption by allowing the diver to adjust the airflow to match their needs at different depths. Lastly, an adjustable second stage can be more versatile, allowing the diver to use it in a variety of diving situations.

An environmentally sealed first stage of a scuba regulator offers several advantages. Firstly, it prevents the entry of water, salt, sand, and other impurities into the regulator, which can prolong its lifespan and minimize maintenance requirements. Secondly, it mitigates the risk of freezing in cold water environments by blocking moisture and decreasing the likelihood of ice formation on the regulator's internal parts. Thirdly, it optimizes the regulator's performance by maintaining a consistent air pressure, leading to effortless and smoother breathing. Lastly, it promotes environmentally responsible diving by averting the release of pollutants into the water, which contributes to safeguarding marine life and ecosystems.

The advantage of a swivel on the second stage of a scuba regulator is that it allows the diver to move more freely and comfortably while underwater. The swivel connects the second stage to the hose and allows the hose to rotate without twisting, which can prevent the regulator from being pulled out of the diver's mouth and reduce jaw fatigue. Additionally, the swivel can enhance the comfort of the regulator by reducing the tension and stress on the diver's neck and mouth, which can lead to a more enjoyable and relaxed dive.

A titanium scuba regulator can offer enhanced durability, comfort, and safety for scuba divers. Titanium is a strong and corrosion resistant material, making it an excellent choice for scuba regulators as titanium is resistant to saltwater corrosion which can prolong the life of the regulator. Additionally, titanium regulators are much lighter weight allowing for easier travel and potentially more comfortable diving. Titanium is also hypoallergenic, which can be beneficial to those who are sensitive or allergic to other metals.

An oxygen (O2) clean scuba regulator can be safely used with gases containing high concentrations of oxygen, which is essential for certain types of diving such as technical diving and rebreather diving. An O2 clean regulator has undergone a special cleaning process that removes any impurities or contaminants that may react with high concentrations of oxygen, preventing the risk of fire or explosion. Additionally, an O2 clean regulator can extend the life of the regulator by reducing corrosion and wear caused by exposure to contaminants.