... 5.FM Radio,MCU system Mini portable voice amplifier with USB/TF and FM radio V-5* ... and music playing information.*MP3 by TF Card, USB flash disk supported, FM Radio Function*Built- ... Lithium Battery, convenient and environmental*Connect computer with USB data link, used as speaker*Built-in 3 ... , Sports, Speech,Publication,Outdoor entertainment mini portable voice amplifier with USB/TF and FM radio V-5