Adding a monitor to your video system allows you to have a better view of your subject while underwater. It is a valuable tool for better framing and to easily see any camera setting adjustments you make.
Over the years many customers have asked for some sort of combination of video light and strobe. With most new cameras also shooting excellent video, this need has increased. However mounting both types of lights at the same type is bulky and heavy, and they're also hard to travel with. The Symbiosis Lighting System SS-2 and SS-1 are a well thought out implementation of the combination strobe/light idea.