... take 5.FM Radio,MCU system Mini portable voice amplifier with USB/TF and FM radio V-5*Mini ... LED Display:It can display the battery status,radio frequency and music playing information.*MP3 by TF ... Card, USB flash disk supported, FM Radio Function*Built-in 2pcs 3.7V/1100mAh Lithium ... Training, Sports, Speech,Publication,Outdoor entertainment mini portable voice amplifier with USB/TF and FM radio V-5