Not only a car FM transmitter, or a car hands-free transmitter, he uses a professional high-performance Bluetooth module, built-in MP3 / WMA decoding chip, can be U disk or TF card music files, wireless Transfer to the car stereo. As long as your phone is equipped with Bluetooth, you can send the music from your phone to your car stereo, the caller can switch to the hands-free state, and when the call ends, it will automatically switch to music playback. This is a comprehensive car product that integrates car hands-free and car MP3 functions. It has a built-in version 4.2 Bluetooth solution, which provides you with high-definition voice quality and stable effects at high speed. Car Bluetooth FM transmitter. Transfer music from mobile phone, U disk, TF card, MP3 to car audio player Car charging, you can charge the phone/iPad smartly via the USB interface Bluetooth car hands-free: the phone can be hands-free calls through Bluetooth one button Car USB can read the U disk through the USB interface, or the card slot to read the TF card FM transmitter,the headset has a long battery life and convenient charging Power on automatically boot,line audio input Support the use of U disk to play music Support MP3/WMA music format Can be hands-free through Bluetooth one-touch, can also bring a private call with headphones Bluetooth stereo music playback, can be transmitted to the car stereo through fm, you can also enjoy clear music Call echo cancellation and noise reduction (CVC) technology USB output voltage, can provide voltage up to 5V/2.5A to other devices Automatic memory function for power failure frequency Car battery voltage display Specifications: Type: Car Bluetooth MP3 Model: G15 Size: about 83*50*42mm/3.27*1.97*1.65in Input voltage: DC12V-24V Output voltage: 5V Output current: 3.5A (max) dual USB Bluetooth version: 4.2 0.3V Transmission distance: 10M Sound Processing: Stereo-A2DP FM frequency: 87.5-108MHz Package included: 1 x Car Bluetooth MP3 1 x User Manual