Tankless Diving Systems for All Experience Levels

It all started with the simple idea of sharing our passion for diving by making it easier for everyone. Today, at Brownie’s THIRD LUNG™, we are proud to be the world’s largest innovator, designer and manufacturer of surface supplied air diving systems. Fun, tankless, battery-powered or gas systems carefully designed to help everyone discover the underwater world, without the weight.

It Only Gets Better

1 system | 2-4 divers | 3+ hours. Discover the all new Sea LiOn™.

A game-changer for the diving world, the first and only in its class, the all new Sea LiOn™is a battery-powered THIRD LUNG™ that performs like our gas systems (minus the fuel).


Variable Speed

Its variable speed algorithm runs based on diver demands and shuts off when not used.


Insta-Charge Battery

The advanced battery technology can be fully recharged in just 4-5 hours to get the most out of your diving day.


No Gas No Oil

This brand new 2020 technology allows the same run time as its gas counterparts, minus the fuel.



Lightweight lithium ion battery technology. Its convenient battery level indicator can be viewed on the water.


Earth Friendly

No fuel needed for an environmentally friendly diving choice.


Depth Selector

A dial at the top of the system allows you to select your maximum dive depth of 15, 25, 35 or 65 feet.

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Accessories and More

Customize your diving experience and complement your current dive gear with Brownie’s THIRD LUNG™ accessories, parts and components. Whether you need extra weights, tow belts, pressure checkers, gear bags or even motor and compressor parts – Brownie’s THIRD LUNG™ has it all and more.

Find a Dealer Near You

Brownie’s THIRD LUNG™ is never far away. Hookah diving systems have revolutionized the world of diving. Find a dealer near you and discover our surface-supplied air diving systems and accessories.


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