... Comes with two wireless UHF digital microphones Full functions of karaoke: KEY CONTROL,TEMPO,ECHO,MIC VOL,MUSIC VOL,VOCAL ON/OFF ... karaoke such as:vocal on/off, echo, key control, tempo, Melody volume control, favorite songs reserve, random play, repeat, continuous play ... same time Gives score and applause for your performance after singing Supports multi-format compare to the traditional one plays MIDI ...