Disney Frozen II Wireless Karaoke Microphone with Bluetooth Features: The first wireless mic with Bluetooth speaker integrated to sing and dance like a real star! Works wirelessly with every Bluetooth equipped device (10m) Mic volume control with echo control for nice voice effects Transform your voice for hours of fun! Press the music control knob to choose between 3 tunes: a child voice, a high-pitched feminine voice, a deep-pitched masculine voice Micro SD/TF card slot 3W speaker for a high quality sound and built-in rechargeable battery for around 3 hours music play time Specifications: Dimensions: H:30.0 x W:15.2 x D:10.5 cm Guarantee:1 year Material: Plastic/Metal Model Number: MIC210FZ