This product is a car Bluetooth hands-free car charger MP3 player, using high-performance professional bluetooth module 5.0+EDR, built-in MP3 decoding chip, can play U disk and TF card music files, and transmit to car stereo through wireless connection. Ifyour phone has Bluetooth function calling, it can automatically switch to hands-free call status and automatically switch back to music playback, and can also transfer MP3 music from your phone to your car stereo through wireless transmission. 1. Support FM full-range transmission function 87.5-108.0MHZ2. Support dot matrix display 1.3 inches 3. Support U disk playback function 4. Support TF card playback function 5: Bluetooth answer, hang up, refuse to answer, redial and other functions 6: Support Bluetooth stereo music playback 7: Echo cancellation and noise suppression (CVC) technology During a call 8: Support dual USB output voltage to power other devices, maximum output 5V / 3.1A9: Automatic power-off memory function 10: Support charge recognition 11: Support MP3/WMA format music playback 12. Support multi-language selection (BT06 has upgraded language, Chinese, Chinese Traditional, English, Japanese, Korean, Thai, French, Spanish, German, Italian, Danish, Portuguese, Russian, Dutch, Swedish, Hungarian, Arabic) 13. Support display contrast adjustment