4-IN-1 MICROPHONE for KARAOKE: Portable handheld wireless microphones can be used as a microphone, Bluetooth speaker, speaker and recorder. With this mini karaoke machine, you can sing anytime, anywhere. .QUALITY AUDIO SOUND: Equipped with professional audio processor and tuning system, 3-layer pop filter, creating stunning KTV live sound environment and wonderful echo reverberation. It is a magic voice changing microphone. There are five sound modes: Original sound, child's voice, woman's voice, man's voice, old man's voice. It can be more fun. .LONG FUN TIME: Built-in 2400mAh battery. Long lifespan and playing time up to 8 hours after fully charged. Ideal for parties, family nights and special occasions. Lightweight and easy to carry, it won't take up space in your pocket when you travel, and you can take it out and sing at any time. .EASY CONNECTION AND COMPATIBLE: This wireless microphone can easily connect any Bluetooth devices, such as Andriod/iOS/PC and YouTube, Smule, etc. apps. You don't need to download any special app.