Auto Life Jacket Cartridge UML
This unit screws on the mainstream brands of automatically water activated inflatable life jackets.
Basically it incorporates a filler of powder that dissolves in water + allows the pin to peirce the CO2 cylinder, giving full activation.
Unit screws on where your existing unit comes off. If your existing unit has been activated, then you will also need to replace the 33gm CO2 cylinder.