USB Audio Speaker with Microphone 1.support TF ... English, French, German, Italian, Dutch, etc. USB Audio Speaker with Microphone Supports Micro USB/TF card, FM, ... etc.Supports Line IN function, receiving the audio source from MP3, MP4, PC, Notebook, for ... USBTechnic specification Dimension138*53mmOutput RMS3w, THD=10%Speaker Power4Ω/3W*2Frequency Response200Hz---16KHzSignal-to-Noise>80dbDistortion ...