This Realistic 40-Channel CB Radio Model TRC-481, 21-1550 comes with a microphone and is ready to be used. It belongs to the CB Radios category under the Consumer Electronics and Radio Communication categories. The brand is Realistic, and it can be used as a Mobile/In-Vehicle Radio. It has 40 channels and operates in the CB band. Please note that no information regarding the condition of the item is being provided.