Dynamic microphone. As to whether it is unilateral or omni, I have no idea since I bought used and there was no documentation with it. In my opinion, it must be cardioid.
In my opinion, it should be a great public dclinaison clbre Shure SM58. It is certainly one-way.
For the photo, see that of the Shure 588SDX is almost the same ^ ^
It sounds a little "box". It feels great nose full public despite having a pro XLR connection.
In addition, it has a large fault. When the phantom power supply is Inrush (for other microphones, for example), it is an abominable couinnement lights or stained when the microphone with his / OFF button.