Bluetooth car charger rainbow LED BC42
1. Bluetooth V5.0hands-free calling   
2. Supports stereo music playing from mobile  phone via Bluetooth    
3. USB 1 supports U-Disk and 5V/1A output   
4. USB 2 supports QC3.0(3.6V-12V/3A max)   
5. TF card supported   
6. Supports Car battery voltage detection   
7. FM frequency 87.5-108.0MHz   
8. Supports A2DP   
9. Supports MP3 / WMA / WAV/ APE / FLAC