1. bluetooth-compatible,FM audio transmission 2. Support QC 3.0 QC2.0,PD, FCP, AFC,BC1.2, 2.4A and other charging protocols 3. Support WMA,MP3,WAV, APE, FLAC music format 4. Support bluetooth hands-free, Voice broadcast, music, navigation. 5. Support output over voltage protection, short circuit protection, over current protection, over temperature protection 6. Low voltage flashing alarm 7. Automatic connect 8. Support U-Disk and TF card 9. . TREBLE can be adjusted Product specifications: 1. bluetooth-compatible version: 5.3 2. FM frequency: 87.5 Mhz-108.0 Mhz 3. bluetooth-compatible effective distance: 10m 4. QC3.0 output: 5V/3A,9V/2A,12V/1.5A 5. PD output: 5V/3A,9V/3A,12V/2.5A 6. Music port output: 5V/1A 7. Input voltage: 12V-24V 8. U Disk/TF card capacity: 32G MAX (Not included) Colour:black Material:ABS Package Contents: 1 * FM transmitter 1 * Audio Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.