The QFX PBX-1211 is a 12in woofer, rechargeable, Bluetooth speaker with retractable handle and rugged wheels for easy transport. It offers built-in LED party lights and supports a wide array of connectivity including microphone input, AUX input and can plays MP3 music stored on USB drives or TF cards. It gives you ultimate control with master volume, bass, treble and echo controls as well as app control to dial in just the right sound. Add a second PBX-1211 and enjoy True Wireless Stereo TWS sound.