bluefire 4 in 1 karaoke wireless microphone with led lights, portable microphone for kids, girls, boys and adults (black) bluefire <b>specifications:</b></br> output power:5w </br> battery capacity: 2400mah </br> charging power: dc 5v</br> frequency range: 100hz-10khz </br> reverberation mode: sound effect reverberation</br> maximum sound pressure level: >115db 1khz tdh<1% </br> <p> <b>package include:</b></br> 1 x microphone</br> 1 x charging cable</br> 1 x audio cable</br> 1 x manual</br>