Sing Along Your Favorite Music with this Fun, Stylish, Quality Speaker. 2 X 4. Full Range Speakers. Built-in BT 3.0 Receiver. USB, SD & AUX Inputs Allow You to Connect Your Non-BT External Audio Devices. LED Display. Flashing Lights on Woofer. Built-in Rechargeable Battery. FM Radio. Mic Input (wired mic included). Remote Control Included. System Type: 2 x 4 Speakers. Frequency Response: 100Hz-20KHz. Impedance: 4 ohm. S/N: 75db. RMS Power: 10W. AC: 100-240V - 50/60Hz. DC: 3.7V 1500mA. Black.