... high fidelity sound. 5.gift for parents ! ZB mini portable speaker Keywords: speaker ,mini speaker, speakers, subwoofer, bluetooth speaker, music angel ... , bomb speaker, woofers, ceiling speakers, megaphone, pa speaker, mini animal speaker, mp3 speakers, speaker cabinet, boom box speaker, ... line into the USB interface of computer to charging 2) Switch: Function one :There are 3 gear switches ,OFF ...