... portable 2.USB power supply 3.Line-in 4.FM radio Excellent Quality FM radio Speaker Technical parameterOutput power:3.0W, 4ΩSNR:>= ... C) Selling points1.Support TF card display2.Built-in FM radio3.Built-in rechargeable lithium battery4.With line in function ... PC, MP3, MP4, Ipnone etc..5.Adopt high quality audio decoder chip, elegant sound quality.6.Aluminum-alloy shell, fashionable & portable7. ...