The Pyle Pro PWMA170 Dual Channel 400W Wireless PA System includes a handheld wireless microphone and a Lavalier microphone to broadcast your voice to a large audience. Thanks to its 6" speaker and 400W peak power, the full-range loudspeaker offers excellent sonic performance in a relatively light package. Plug in a wired microphone, guitar, or other instrument using one of the two built-in 1/4" input jacks. The unit can be used to play MP3s from a USB stick or SD card and can be connected to an iPod or iPhone via the 3.5mm aux-in jack. With the echo, bass, and treble controls, effects can be added to your voice. The unit is well suited for classrooms, tour guides, and business meetings. It runs on 110 VAC or 12 V for car use. The unit also comes with a LCD card reader that displays song number and play time.