This Speaker Delivers Durability Flexibility and Outstanding Audio Performance with Exceptional Range. The Speaker System is Perfect for Home Entertainment Seminars & Any Other Venues and Events Indoors or Outdoors. 2 x 10′ High Efficiency Woofer. Built-In BT Receiver Allows You to Wirelessly Connect to your iPad iPhone iPod Smartphone & More. USB/SD & AUX Inputs Allow You to Connect Your Non-BT External Audio Devices. FM Radio. Flashing Lights on Speaker Grills and Top Knobs. Rechargeable Battery. Volume/Mic Volume/Echo Gain Controls. 2 Mic Input (1 mic included). AC Power Supply: 110-240V. Remote Control Included. Handle and Wheels for Easy Transport Speci?cations: System Type: 10″ Woofer Frequency Response: 30Hz-20KHz Sensitivity (1w/1m): 86+/-2dB Impedance: 4 ohm Peak Power Capacity: 250Watts RMS Power: 40W.