Teach without boundaries.The AW330 Wireless Classroom Audio System is a portable sound solution for voice and multimedia both inside and outside the classroom. With 2.4 GHz wireless technology, speaker buzz reduction and a rechargeable battery, this lightweight yet solid system ensures the best audio quality and mobility regardless of where you teach.Easily portable audio system.Compact and powered by a lithium polymer battery, this audio system is highly portable and will last an entire school day before recharging. The 20 watt speaker delivers ample and clear sound whether used inside the classroom, or out.Just teach, we'll do the rest. The microphone is able to maintain a constant 360° connection to the speaker virtually eliminating signal loss and channel interferences. Unlike IR microphones' need for line-of-sight, or FM microphones' channel limitations, our 2.4 GHz microphone always stays connected for clear, stable audio no matter where you're facing.Enrich your class. Enhance your students' learning experience by adding multimedia audio through the additional audio input port. Simply connect your smartphone, tablet, laptop or any other audio source to be amplified along with your voice.