Car mp3 bluetooth player car bluetooth hands-free fm transmitter g13 voltage car charger dual usb product description: A comprehensive car product that integrates car hands-free and car MP3 functions. It has a built-in version 4.2 Bluetooth solution, providing you with high-definition call sound quality and stable performance at high speeds. It is not only a car FM transmitter, but also a car hands-free transmitter. It uses a professional high-performance Bluetooth module and a built-in MP3/WMA decoding chip, which can wirelessly transfer music files in a U disk or TF card to On the car stereo. As long as your mobile phone is equipped with Bluetooth, the music in your mobile phone can be transmitted to your car stereo. Incoming calls can be switched to hands-free status. When the call ends, it will automatically switch to music playback. Function: 1: Car Bluetooth fm transmitter: transfer music from mobile phones, U disks, TF cards, and MP3s to car audio for playback 2: Car charging: You can intelligently charge your mobile phone/iPad through the USB interface. 3. Bluetooth car hands-free: The mobile phone can make one-click hands-free calls through Bluetooth. 4. Car USB: You can read U disk through USB interface, or read TF card through card slot Product Features: 1. FM FM transmitter 2. The earphones have long battery life and are easy to charge. 3. Automatically start up after power on 4. Line audio input 5. Support using U disk to play music 6. Support MP3/WMA music format 7. It can be hands-free with one click via Bluetooth, or you can wear headphones for private calls 8. Bluetooth stereo music playback, which can be transmitted to the car stereo through FM, or you can enjoy clear music exclusively 9. Call echo cancellation and noise reduction (CVC) technology 10. USB output voltage can provide voltage up to 5V/2 to other devices. 11. Automatic memory function for power outage frequency points 12. Vehicle battery voltage display