multi-media USB mini speaker box 1,double play format MP3,WMA ... . Selling PointSupport USB Flash Driver, SD card, Line In, Torch Light, FMSD card, Line In,FMSpecificationOutput power3W2WSNR≥ 60 dBA≥ ... (maximum 2V ppm)Speaker Impedance4Ω4ΩDistortion≤5%≤5%Torch LightΦ5N/A FM FM moduleP5807P5807FM band range87.5 - ... input 5V/500MA 1100MAH rechargeable lithium multi-media mini speaker box,WMA,MP3 player