... FM radioFunction descriptionSupport SD/MMC card readingWith USB 2.0 slot With FM tuner,function of auto ... SD Micro Music System with FM radio MPEG-2,MPEG-2.5,code rate 8-448kbssupport both MP3 and ... DC 5VTriangle orientation low frequency passive radiator designRMS: 3W*2, S/N= 90dB when 1W 4 OhmTriangle orientation ... , 1020mAh 3.7V Li-Battery with protection circuit;2, AA dry battery; 3, USB power supply ...