Immersive, Clear Sound: Mini karaoke machine features unparalleled HI-FI sound quality and advanced technology to deliver powerful, balanced sound with minimal distortion. Loud enough as a singing toy. Long Playing Time: This kids karaoke machine has a built-in rechargeable battery that provides up to 8-10 hours of playback. Whether it's a birthday party, classroom activity or outdoor adventure, this portable Bluetooth speaker and wireless microphone will keep the fun going. Funny Voice Change: 5 magic sounds add some excitement to your karaoke party! Kids karaoke machine including girl's, boy's, baby's, monster's and the original sound. Sing your heart out with a funny twist.