... box speaker 1.Frequency range:45Hz~18KHz,with 3.5mm audio line-in 2.Support:MP3/4,COMPUTER,CD PLAYER,Low ... fidelity4) 3AAA battery or usb power supply5) with 3.5mm audio line-in6) Frequency range:45Hz~18KHz7) Support : MP3/4,COMPUTER ... Mobile/Cell Phone, MP3, MP4, Computer and other kinds of Audio series products1)