This high-powered Karaoke PA sound system is equipped for full-range stereo sound reproduction perfect for a patio party, crowd control. This Indoor/Outdoor Speaker System has a built-in Bluetooth w/ wireless range of up to 33 + ft so you can play your favorite song from all of your favorite devices like iPhone, Android mobile phone, iPad, tablet, etc. This speaker & mic set can record audio as streamed through the speaker or via included external mic which is perfect for rehearsing or singing practice. It also has echo, bass, & treble controls for Dj sounds. The device is also equipped with a USB Flash Drive Memory Reader / SD Card Reader and AUX 3. 5mm Input cable for connecting external devices. Compatible with MP3 digital audio files playback. This box-type battery-powered heavy-duty portable PA Loudspeaker has a built-in rechargeable battery which makes it convenient and portable.