Retion Wireless Interactive Visualizer 5G is able to acquire instant
video of teaching, homework, writing, and experiments from any mobile terminals
in video capture server. Furthermore, it can rotate up to 270 degree, and is
suitable for a variety of uses. For instance, taking picture on file while
it's 90 degree; filming the activities in the class on 180 degree; recording
the teaching micro lecture while it's 270 degree.