... & competitive price Portable Gift Mini Speaker With USB/SD Card Reader: 1.Stereo sound effect, wonderful bass, sound beyond size,good ... and amplifer circuit needed, easy to operate5.Support for laptop, desktop, MP3, MP4, tape recorders, learning machines, radios and other audio ... card , FM function (frequency range :87.5-108 MHZ) Card reader function, audio line in and earphone audio output function. 3 ...