Microphone function Bluetooth version 5.0 Power supply voltage: 3.7V-5V and current not less than 2A. Power: 2* 3-5W, and two 5W / 3W speakers can be connected at the same time. Connect the microphone function, Support power-off memory Music format: MP3/WMA/WAV/APE/FLAC lossless music format. Radio FM frequency: 87.5—107.5mhz. Introduction of support function: Support MP3/USB/TF/LINE IN/FM/Bluetooth/remote control/DC 5V. About structure: panel size: 90 * 32 MM