Podium Pro Audio PP1006A1 Battery Powered 10-Inch 500 Watts Active Speaker with USB SD MP3 Player 10'' Woofer - Power Output: 250 Watts RMS, 500 Watts Max - Sensitivity is 120dB - Frequency Response is 28-20,000 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 6 hours - Charge lasts for approximately 5 hours Two 1/4" Jack Inputs & Volume Controls for Microphones - 1/4" Line Input and Control - RCA Inputs & Volume Control for an Additional Component - 1/4" Jack Line Level Output for an Additional Powered Speaker Master volume control, Bass, Treble, Echo and Delay Control Knobs - Pole mount with knob adjustment for different size stands - Side Handle for easy Portability - Height 20.25" x Width 13.5" x Depth 12" - Weight 34 pounds