... channel, 3.With USB 4.Rechargeable mini portable USB speaker 1.Description and Specification:TF/USB card player1.100% ... input jack.5.This machine is a portable multimedia speaker, which is design exquisitely, convenient to carry6.2 ... *3W 4Ω, Φ45mm strong magnetic wide-band hi-fi speaker.7.PC, laptop, computer, MP3, MP4, mobile phone ... switch change different mode between music play, Speaker and FM radio