Introducing the RadioShack TRC-503 40 Channel Citizens Band CB Radio with Mic 21-1703. This black mobile/in-vehicle radio has 40 channels, operates on the CB band, and comes with a plug-in car adapter for power. The brand is RadioShack and the model number is 21-1703.

This CB radio is a must-have for anyone who needs to communicate while on the go. It is perfect for truck drivers, RV enthusiasts, and anyone who needs to stay in touch while on the road. With its compact design and easy-to-use features, this radio is sure to become a favorite among users.