... : power charging portLINE IN: Audio inputOFF / ON: Power switchMICRO SD: TF MICRO SD card or the interfaceUSB: MP3 format will be the ... , a boxFeatures:1, there are music angel M03UK U disk, TF card, MP3, SD card decoding, but also both the FM ... , MP3, you can play music.2, Built-in TF card slot, insert the TF card directly.3,3.5 mm stereo plug ...