Some have suggested that it stems from Hussenot's device, because it used film and "ran continuously in a light-tight box, ...

The cockpit voice recorder ... Ocean in 2009 were found two years later from a depth of more than 10,000 feet, and technicians were able to recover most of the information.If a black box has ...

The so-called “black box." There are actually two of these remarkably sturdy devices: the cockpit voice recorder and the flight data recorder. And they're typically orange, not black.