1.surport TF/SD,usb-disk 2.portable,fashionable design 3.Supporting USB2.0 high speed transmission 4.competitive price Promotional Mini Speaker For IPOD MP3Mobile speaker 1.surport TF/SD,usb-disk 2.portable,fashionable design 3.Supporting USB2.0 high speed transmissionSpecifications:Out put: RMS 6W(3W + 3W) THD = 10% Frequency response: 150-1800Hz (±3dB) Signal and noise ratio of power amplifier: ...