Podium Pro Audio PP806A1 Battery Powered 8-Inch 400 Watts Active Speaker with USB SD MP3 Player 8'' Woofer - Power Output: 200 Watts RMS, 400 Watts Max - Sensitivity is 110dB - Frequency Response is 30-20,000 Hz Built In MP3 Player with USB Drive or SD Card Inputs, Remote Control and Several Control Options Class D Amplifier - Rechargeable Built In Battery - Charging time approximately 4 hours - Charge lasts for approximately 5 hours 1/4" Jack Input & Volume Control for Microphone - RCA Inputs & Volume Control for an Additional Component - 1/4" Jack Line Level Output for an Additional Powered Speaker Master volume control, Bass and Treble Control Knobs - Angled, Rugged, Lightweight ABS Plastic Cabinet with Rubber Feet - Pole mount with knob adjustment for different size stands - Height 16.5" x Width 10.75" x Depth 10.5" - Weight 20 pounds