... perfect sound. apply to mobile phones, MP3, MP5, PC and other audio output device. TF card portable mini speaker.Play TF card ... format, such as mobile phones, MP3, MP5, PC and other audio output device.Output power: RMS 3Wx2 THD = 10%Frequency response: ... : 39.6x32.7x42cmGW / NW: 31.6/30.6KGSAccessories: USB cable, audio cable Portable Mini speaker for mobile phones, MP3,etc