fm transmitter aux modulator wireless bluetooth handscar kit car audio mp3 player with 3.1a quick charge dual usb car charger

bluetooth transmitter - more stable fm signal, better anti-interference performance, enhanced sound experience and built-in microphone with echo cancellation and noise suppression (cvc) technology, offer hands-talking and wonderful music. dual usb car charger - total 4.1a to fast charge two devices at the same time. 3.1a output for ipad/tablet/smart phones and big current devices; 1a output for normal phones/navigation/cameras and small current devices.