This is a Bluetooth FM transmitter MP3 Player for Cars, support USB driver/ Micro SD card and built-in Microphone, works with iPhone, Samsung Android Smartphones · Allow you to pair up with your devices via built-in Bluetooth, hands-free system can provide you to accept incoming calls, convenience and guarantee a safety drive. · High quality of built-in Microphone, wind noise suppression, offers you a clear talking quality while driving. It allows to you to receive a phone call all while still remaining to drive safely · Support Micro SD card, support MP3/WMA/WAV/FLAC music format. The function keys on the unit allows for playback, adjusting the volume, search, and a lcd screen with a screen lock. · USB charging port, suitable for iPod/iPhone , Samsung, HTC or other Smartphone/tables devices. Car Bluetooth FM transmitter MP3 PlayerSupport Bluetooth Hands-free, with built-in microphone Support USB/Micro SD card (1GB – 32GB), support format: MP3/WMA/WAV/FLAC. Able to charge for various Smartphone/devices. LCD display Support A2DP function of Smartphone, Smartphone via Bluetooth directly broadcast high quality mobile phone music (Bluetooth stereo) 21 key remote control included. Rate voltage: 12-24V Work temperature: -20-50°c Frequency response: 20Hz-15Khz Bluetooth transmission distance: 10-15m FM emission frequency: 87.5-108 MHzPhone Call function;Handsfree function full duplex; DSP(Digital Signal Processing) Technology, CVC technology for echo cancellation and noise suppression.charges smartphones through the USB interfacePlay music from USB disk and TF Card, SD cardAudio/music playback car bluetooth A2DPTransmission distance : 5mAudio format: MP3/WMA/WAV/FLACSNR: 68dBFrequency Response: 20Hz - 15KHzBluetooth Profile: HFP/HSP, OPP, A2DP/AVRCP, PBABThis new, elegant, compact and fashionable gadget is specially designed for you to enjoy MP3 music on-the-go.Car MP3 wireless FM transmitter lets you take a break from your regular music. Plug the MP3 player into cigarette lighter of your car and you are good to go.