... . resonance speaker Briefly introduction:Cylinder resonance speakerNew style,hot sale.Classic 4 colors is available:black,red,silver,blue.Adopt pure ... -in Li-battery2.With TF reader function3.Can realize FM radio function4.With remote control. Power specification:Input Volts D.C ... output power:3WRange of frequency response:80Hz-18KHzSounde source:FM radio.TF card, PC, MP3, MP4, MD, CD, DVD player, ...