The Pioneer DEH-S4220BT CD Receiver is a versatile and high-quality in-dash unit for car audio. With features like Internet Radio compatibility, USB input, Satellite Radio and HD Radio readiness, this CD player also includes an equalizer, smartphone charging capabilities, and Bluetooth connectivity. The detachable face and auxiliary input make it easy to use and customize your listening experience. Perfect for those looking for a reliable and feature-packed car audio system.