... .lower price and good qualiy speaker bluetoothPower Source(1) DC 6V /1000mA adopter ... )Output RMS 4W(2W*2)(2)Right/left sound respond frequency 150-18000HZ(3)Signal and noise ratio ... connected to MP3 ,MP4 ,CD ,DVD, Computer ,IPOD and cell phone.Apply Bluetooth Wireless high technology equipment, ... straightly or receive any-call.AccessoriesBlister, Speaker, USB Line, Audio line, Color Card, Introduction ...