Pioneer Pioneer DEH-S4100BT CD Receiver with Improved Smart Sync App Compatibility/MIXTRAX/Built-in Bluetooth

He DEH-S4100BT features Direct access buttons such as navigation, bass boost and a dual function volume knob that are optimized with the Pioneer smart sync app, bringing multimedia capabilities to a single-din receiver. The receiver also includes the USB auto switch feature so when the phone is connected via USB The listener has the option to choose whether the receiver uses the phone as a source, or just charges the device.