Just guessing, but red elements on a black dial (more)
are thought to "drop out" visually when the wearer needs a very quick read. I've seen this discussed re the EZM design: a matter of visual clarity under stress. You probably don't need to see the dive rating with the same urgency, in other words.
Posted on Dec 30, 2001, 9:31 PM from IP address 18.104.22.168