**********4 Music Play ModesYou could enjoy music feast in your car stereo via 4 methods: Play music from -enabled devices; Stream music from TF card (64GB); Transmit music from USB flash drive (64GB); Stream music from Aux( 3.5 mm Jack) cable. *****Hands-Free CallingWith advanced CVC noise cancellation technology, Built-in microphone grants you crystal clear call. One-click the button to answer/redial/hang up or reject calls. Keeping you connected when driving, making your driving more interesting and safer. *****Dual USB Ports & QC 3.0 ChargerThe portable car charger support charge both devices at the same time, share the charge port with your friends while listening to music. QC 3.0 quick charger port and 2.4A USB port, smart output current pairs most cellphone or tablet. Safely charging to your device without damage to the battery with this radio transmitter. *****Wide CompatibilityThe car adapter wide compatibility with most enabled devices, such as iPhone, iPad, LG, Samsung, Tablet, HTC