Support 4-color Color Spect Display.support Bluetooth Bluetooth Version 5.0 And Hands-free Calling. Support Aux, Fm, Usb, Sd.support Mp3/wma/wav/flac/ape Format Music. Support Bluetooth Bluetoot On A Song, Next Song, Volume Adjustment, Play / Pause, Mute. Support Power-off Memory Function: The Song And Volume Played Before The Memory Is Powered Off Can Be Memorized To The Current Point. Support Usb/sd Card/bluetooth/fm/switch.turn On The Default Bluetooth, If You Have A Card Or A Usb Flash Drive, Put Music Directly. Note: Different Batches May Have Different Appearance, Which Does Not Affect Use. Material: Plastic Colour: Black Package Contents: 1 X Decoder Board 1 X Remote Control 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.