Bluetooth FM Transmitter, Wireless In-Car FM Adapter Car Kit with USB Car Charging for iPhone, Samsung, LG, HTC, Nexus, Motorola, Sony Android Smartphone EXCELLENT HI-FI STEREO SOUND QUALITY: Bluetooth sound processing:A2DP.High-performance built-in microphone with Echo cancellation and noise suppression (CVC) technology which can offer your clear talking and wonderful music. MORE INTELLIGENT AUTO CHARGING: Automatically detect the charging device and charging environment, atch the optimal current, display output current value,more intelligent than others, Exquisite appearance. HANDS-FREE CALLING: Bluetooth version:2.1+EDR. Simply paired your phone with the Bluetooth FM Transmitter and its hands-free system can set free your hands during answer the calls and let you safely drive. STARCN DESIGN ADVANTAGE: A new Bluetooth MP3 Player FM Transmitter Hands-free Car Kit Charger, which support USB driver and TF card. It can automatically play and transmit the MP3 files of USB driver and TF card after matched with your radio by the frequency. BROAD COMPATIBLE MODELS: Universal design for all types of devices! You can use it as an Apple iPhone 4 4s 5 5s 5c 6 plus, a Samsung galaxy s3 s4 s5 s6 edge+ Hands-Free Calling and Car Charger, or for charging iPad, other smartphones and tablets, GPS units, MP3 players and more.