Car Bluetooth Speakerphone, JVR In-Car Wireless Bluetooth FM Transmitter Radio Adapter with Hands-Free Calling, USB Charging, Music Control, USB Flash Drive/Micro SD Card Reader & MP3 Player, Pink FM TRANSMITTER: Play stereo quality sound from your phone, Micro SD card, USB flash drive & MP3 to car speaker stereo system via FM radio signals CAR SPEAKERPHONE: Bluetooth connection, excellent hands-free solution, big friendly button to answer and enjoy crystal clear conversation STREAM MUSIC: Play music in the MP3 or WMA format on Micro SD card or USB flash drive, stream music via A2DP Bluetooth audio profile or AUX input SMART CAR CHARGER: Automatically adjusted the output current according to smartphones or tablets, 1.0A for iPhone, 2.1A for iPad, 2.0A for Samsung ADVANCED TECHNOLOGY: Echo cancellation and noise suppression (CVC) technology, LCD screen shows the voltage of car battery in real time