FM Transmitter TF Card U Disk Car MP3 Player QC3.0 Type C PD Fast Charging 2 USB Charger Bluetooth 5.0 Handsfree Car Kit. Working voltage:DC12-24V USB1 output:4.5V/5A, 5V/4.5A 9V/3A, 12V/3A TYPE-C output:5V/3A 9V/2.22A, 9V/3A 12V/3A (only 24V input:support 15V/3A20V/2.25A) USB2 output:5V/1A Product name:S-21 Car bluetooth MP3 Charger Product model:S-21 Transmitting frequency:87.5-108.0MHZ FM transmission distance:Less than 5 meters wireless version:wireless 5.0 Effective distance:about 10 meters TF card U disk capacity expansion:less than equal 32G Audio format:MP3/WAV/FLAC/APE/WMA Support:Connecting 2 mobile phones at the same time Applicable models:12V-24V models are universal Colour:Black Material:ABS Package Contents: 1 x Car handfree FM transmitter 1 x Chinese and English instruction manual 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.