Comments about Aqua Nautilus Lifeline Pouch:

The case attaches to your BCD with a plastic spring clip that is held to the case by a cloth strap. After several days of use the cloth ripped right off, presumably after snagging on something, but I never saw it happen so it obviously tore easily. If I didn't have the secondary coil wrapped around my shoulder strap to keep the case from floating up I would have lose it, including the Nautilus lifeline radio. Not good for anything, let alone a safety device.