Disney Ice Queen - Light and voice changer. Works wirelessly (10 meters). Microphone volume control and echo control for beautiful voice effects. Transform your voice for hours of fun. Press the music control button to choose between 3 voices: child voice, high feminine voice, low masculine voice. Micro SD/TF card slot. 3W speaker for high-quality sound and built-in rechargeable battery for about 3 hours of music playing time. LED lights with 7 projection modes and 5 colors. Music button (start/pause, back/forward, volume +/-). Compatible with Red Karaoke mobile app: choose your favorite song from 70,000 karaoke songs.