is for recreation, singing practice, lectures, small groups or whenever a compact personal microphone is needed. This product is portable with excellent performance. You can connect two mics together to sing duets or use for presentations. You can also use Lyric Elimination Mode which significantly lowers the recorded singer’s voice so you can use regular recordings for Karaoke. [Duet Mode and Lyric Elimination Mode features cannot be used together). The Echo feature gives you true Karaoke sounds. You can connect this product to a Smart Phone, Bluetooth, AUX and also other digital devices by using the included cable.