Through “artificial gill” technology, the rebreather provides an air supply when the user bites gently on the device’s mouthpiece. This triggers a tiny compressor to filter water from the two arms on the sides and draws them into the membrane. The membrane features holes small enough to let only oxygen molecules through, filtering out water and other liquids. Small on board liquid oxygen tanks provide a small air supply.
- Rebreathers appear near the end of Batman Forever, worn by Val Kilmer and Chris O'Donnell during the approach to Claw Island.
- The rebreather is used by Batman and Catwoman during the Batman: Hush storyline.
- The Rebreather is used by Batman during Suicide Squad whilst retrieving Harley Quinn from the Gotham Bay.
- The Rebreather makes several appearances during Batwoman, most notably during "The Rabbit Hole".