Car-G7 has a Bluetooth hands-free phone, Bluetooth FM Transmitter Car Charger Car MP3 card recognizer. It used a professional high performance Bluetooth module, built-in MP3/WMA decoder chip, USB disk or TF card music files wirelessly to the car stereo. And, as long as your phone is equipped with Bluetooth, your phone will be able to send music Hitting your car stereo, hands-free calls can be switched to answer, hang up, reject, redial calls and other functions , at the end of the call, it will automatically switch to the music player. Tech Specific: 1,Model: CAR G7 2,Color: gold 3,Operating voltage: 12v ~ 24v 4, Voltage limit: 9v ~ 26v 5,Operating temperature: 0 to 50 degrees 6,USB Output: 5V/2.5A 7,Bluetooth version: 2.1 + EDR 8,Bluetooth transmission distance: 10M 9,Microphone Effective Distance: 0.5 ~ 2M. Features:1, Bluetooth FM transmitter: the phone, U disk, TF card, MP3 music is transmitted to the car audio player 2: Car Charging: via USB interface to the mobile phone/iPad Smart charging 3, Bluetooth hands-free: a mobile phone via Bluetooth speakerphone key 4. Car USB: You can read USB disk via USB interface or read TF card slot 5, high-fidelity stereo, using DIGITAL, PLL technology 6, LCD display frequency, choose more convenient 7, full-frequency emission (up to 200 frequencies can be selected) 8, with a power-off saving memory, can store the currently playing frequency 9, direct buttons, play/pause, previous/next track 10,Independent Bluetooth startup/shutdown button 11, USB output voltage, a voltage of up to 5V/2.5A to other devices.