Specifications: Bluetooth version is 5.0 Music format: MP3/WMA/WAV/FLAC/APE lossless format Radio FM frequency: 87.5-107.5 MHZ Support function introduction: support MP3 / USB / TF / LINE IN / FM / BLUETOOTH / remote control connection / DC 5V or 12V (optional) About the structure: Panel size: 75*50 MM, screw holes around the panel, the depth of the board is 18MM Infrared receiver module TF card slot: connect TF memory card (maximum support 32GB, not included); LED: digital color screen display, showing red; AUX interface: audio input interface MIC: support microphone function USB interface: connect U disk (maximum support 32GB, not included); PREV/VOL-: The short press is to select the previous song; the long press is to decrease the volume PLAY/PAUSE: The short press is to switch between pause and play; the long press is to radio FM automatic station; NEXT/VOL+: The short press is to select the next song; the long press is to increase the volume; MODE: Switch between USB/TF/FM/AUX/BLUETOOTH; Package includes: 1 x MP3 WMA WAV Decoder Board 1 x Remote control (without batteries) 1 x Cables