Fangrui Product Details 1. Jx-810bt Car 12v Audio Mp3 Player Decoder Board Fm Radio Usb, With Bluetooth Remote Control Recording 2. Bluetooth Version 5.0 3. Support Calls (long Press The Pause Button To Answer The Call When There Is An Incoming Call). 4. Support Recording. Recording Only Supports Operation In Tf Mode Or Usb Mode. 5. (long Press The Mode Button To Start Recording, Long Press The Mode Button Again To Cancel The Recording And Play The Recording File; Exit The Recording Mode And Long Press The Pause Button To Exit. When Recording, You Need To Connect A Storage Device, Such As: U Disk Or Tf Card;) 6. Support Power Off Memory 7. The Power Supply Voltage Supports Between Dc 5v-12v, And The Working Current Is Between 1-2a. A Single Usb Discharge Supports 2a (max) Current, And The Size Of The Current Is Determined By The Input Voltage And The Data Line To Determine The Final Output Value. 8. Can Be Directly Connected To Speakers, With Power Amplifier And Decoding Functions. 9. Support Song Format Mp3 Wav Ape Flac 10. Main Functions Mp3usbtfline Infmbluetoothremote Control 11. Power 6w, True Stereo 2x3w. 12. Support Folder Selection And Playback. When Usb Or Tf Is Playing, When There Is A Folder In The Device And There Are Songs In The Folder, Press The Previous Button Or The Next Button Twice To Select The Folder To Play The Song, And The Screen Will Display F001-f00x And So On, There Are X Files And The Folder Will Display F00x.