... competitive price Portable Gift Mini Speaker With USB/SD Card Reader: 1.Stereo sound effect, wonderful bass, sound ... built in sound card driver and amplifer circuit needed, easy to operate5.Support for laptop, desktop, MP3, MP4, ... /WMA music fromat audio files of TF card , FM function (frequency range :87.5-108 ... MHZ) Card reader function, audio line in and earphone ...