multi-media USB mini speaker box 1,double play format MP3,WMA 2,high capcitive battery 3,FM radio,LED flashlight. Selling PointSupport USB Flash Driver, SD card, Line In, Torch Light, FMSD card, Line In,FMSpecificationOutput power3W2WSNR≥ 60 dBA≥ 60 dBAFrequency response20-20KHZ, ± 3 dB20-20KHZ, ± 3 dBAUX input sensitivity0.5 V (maximum 2V ppm)0.5 V (maximum 2V ppm)Speaker Impedance4Ω4ΩDistortion ...