Pyle Pro Outdoor Indoor Wireless Bluetooth Portable PA Stereo Sound System with 6.5 inch Speaker, USB SD Card Reader, Rechargeable Battery,  Indicator Lights, Wireless Microphone, Remote - PWMA170 PORTABLE AND POWERFUL: Thanks to its 6 inch subwoofer and 400 watt peak, this Portable PA Speaker System by Pyle Pro has enormous power, Full Range Stereo Sound Reproduction and incredible sonic performance in a relatively light package. SUPPORTS USB / SD CARD: This device is also equipped with USB/SD Memory Card Readers to serve as an MP3 player, and AUX 3.5mm Input for connecting external devices like an iPod or iPhone AUDIO CONFIGURATION: The professional PA Stereo features a Front Panel Control Center with rotary controls so you can easily adjust the Volume, Bass, Treble, Echo to your desired levels. Perfect for dj party, music jam, public gathering. USE ANYWHERE IN THE WORLD: This compact PA amplifier loud Speaker can be used in America, Europe, and other compatible countries since it features a switch that lets you change between 110v and 220v. Comes with a wall power cable and DC 12 Volt clip connectors. Sensitivity- 95dB (+/-2dB). Impedance- 4 Ohm RECHARGEABLE BATTERY: This box type battery powered heavy duty Speaker System runs on a 12V/2.6A Lead-Acid rechargeable battery and the set comes with a Handheld Microphone, Headset, Lavalier Mic for karaoke fun. Ideal for Personal, commercial, Indoor / outdoor use.