The Optimus Omnidirectional Dynamic Microphone Model No. 33-3030 by RadioShack is a wired dynamic microphone designed for live performances. It features an omnidirectional polar pattern, making it suitable for capturing sound from all directions. The microphone has a silver color with a wire-mesh windscreen and an on/off switch for convenience during use. Its transducer type is dynamic, providing a clear and crisp audio output for various audio applications.