BLUETOOTH&KARAOKE 1) Output power: 3W*2 2) Frequency response: 150 Hz-18KHz 3) Horn Size: 2*3inch/4Ω 4) Built-in battery: lithium battery 3.7V/1000MAH 5) Input power: 5.0V 6) With LED display 7) With Bluetooth function Speaker function: Support 3.5MM audio, PC audio input, AUX, SD and USB card, FM Radio Accessories: USB charging cable, audio cable, Remote control Size: 140*128*260mm Meas: 730*315*310mm(Box/10units)