... ,USB,AUX MP3 Decoder Board, pcb board &ABS board, fm radio and digital screen display, with remote control, and memory function ... -005Specifications Voltage 5V FM frequency range 88MHz-108MHz Function FM radio, memory function Control Provided digital display, button, remote control Shape ... USB/SD state; Short press it to search and save channels.2.“VOL-”: Can set VOL-, TIME-, ALARM-, and POWEROFF-.3 ...