2 x 15" Speaker System with True Wireless Technology 2 X 15" High-Performance Speaker Built-In BT Receiver Allows You to Wirelessly Connect to Your iPad, iPhone, iPod, Smartphone & More Built-in USB, SD, and AUX Inputs Allow You to Play External Media Devices Big Size LED Display Brilliant LED Lights Effect EQ Mode Professional Karaoke Function with 2 Mic Inputs PLL FM Radio with 40 Pre-Set Stations AC Power Supply: 110V/220V, 60Hz- 50Hz Built-in Wheels for Convenient Transportation Remote Control & Wireless Microphone Included Specifications: System Type: 2 X 15" High-Performance Speaker Frequency Response: 30Hz-20KHz Sensitivity (1w/1m): 86 /-2dB Impedance: 4ohm Peak Power Capacity: 600 Watts RMS Power: 150W Program Power: 300W Accessories: 1 Mic, Remote Control and Manual