About this itemQFX PBX-155SM speaker has you covered for any occasion. This versatile PA speaker rolls on into events to pump out music or amplify announcements. Once it's in place, it can stream music from a variety of sources: wirelessly via Bluetooth-enabled devices, through USB and microSD card slots, or connected with a cable through the aux-in port. No matter what you're playing, the speaker's 15" woofer, speaker standard and wired microphone ensure that everyone can hear clearly. Features