Bluetooth FM Transmitter, Aukora Wireless FM Adapter Car Kit with USB Charger, Hands-Free Calling, Music Controls for iPhone iPod iPad Samsung Smartphone (Black) PLAY MUSIC: This is a new Bluetooth MP3 Player FM Transmitter Hands-free Car Kit Charger, which support USB driver and Micro SD card and can automatically play and transmit the MP4 files of USB driver and Micro SD card after matched with your radio by the frequency. QUICK CHARGE: 5V/2.5A USB car charger can charge your favorite mobile devices fast, and it can automatically adjust the output power to different smart phone HANDS-FREE: 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. FRIENDLY DESIGN: All-in one Button. We innovatively put the answer/end a call/play/pause into a single protruding button. This is the best choice for car drivers. PACKAGE: 1 x Aukora Bluetooth FM transmitter,1 x 3.5mm audio cable.30 Days Money Back Guarantee and Our Friendly Service - 24 hours email customer service response.