1. Automatically Support Usb / Tf / Bluetooth / Fm / Aux Switching. Prompt And Convert To Cable (signal Sound Or English Voice Optional) 2. Support Music In Mp3 / Wma / Wav Format. Mp3 Songs 32-320kbps, Wav / Wma Is 1411kbps Or Below 3. Support Usb / Card Switching, Music, Next Song, Volume Control, Eq, Play / Pause, Stop, Mute, Shutdown, Directly Select Songs. 4. Support Bluetooth Previous Song, Next Song, Volume Control, Play / Pause, Mute. 5. Support Power And Storage Function: Turn Off The Storage Before Playing The Song, And Can Store The Volume To The Current Position. Breakpoint Memory (in Playback Mode The First Time You Restore The U Disk Or Tf Card Will Play The Breakpoint Memory For The First Time When The Power Is Cut Off After About Three Seconds) Bluetooth Version Is Version 5.0 Music Format: Mp3 / Wma / Wav / Flac / Ape Lossless Format Music Power: 2 * (15) W, Connect 2 (15) W Speakers Radio Fm Frequency: 87.5-107.5 Mhz Support Function Introduction: Support Mp3 / Usb / Tf / Line In / Fm /