Play songs from USB flash drives and TF cards.Bluetooth A2DP technology for transferring audio and high quality stereo music from your mobile phone to your car stereo supports HFP/HSPOPP,A2DP/AVRCP, Bluetooth protocolsBluetooth hands-free function with cancellationUSB port for charging mobile phones, maximum 3.1A charging currentSuitable for all kinds of voltage car useRated operating voltage:12- 24VConsumption work rate:0.5WOperating temperature:10-70 degreesOperating Temperature:0- 90%Frequency response:20Hz- 15KhzAudio format:MP3Signal to Noise Ratio:68dBBluetooth version:v5.0+Bluetooth sound processing sound:A2DPBluetooth transmission distance:10- 15mFM transmitting frequency:87.- 5- 108.0MhzHow to use the MP3 in the car.1.Turn on the radio in the car and tune it to an idle frequency (. a frequency with no local broadcast)2.Plug the product into the car lighter socket and set the frequency of the product to the same frequency as the radio just now3.Insert the memory card or U disk with downloaded songs into the machine, or search for the Bluetooth configuration of the product by Bluetooth on your mobile phone4.So that the machine can automatically play the music in the memory card or U disk or mobile phoneColour:BlackMaterial:plasticPackage Contents:1 * Bluetooth in carOnly 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.