... battery, when the lights dim or flicker, or the sound distorted, replace the battery.ANT: Antenna jack, the ... MP3 format will be the U disk / SD card reader into the USB jackBundled accessories:1, Usb power ... round a stereo audio cable (with matching computer sound card jack), audio cable is also a FM radio ... there are music angel M03UK U disk, TF card, MP3, SD card decoding, but also both the FM radio. ...