4-IN-1 MICROPHONE for KARAOKE: Portable wireless handheld microphones can be used as a microphone, Bluetooth speaker, speaker and recorder. With this mini karaoke machine, you can sing anytime, anywhere. Equipped with professional audio processor and tuning system, 3-layer pop filter, creating stunning KTV live sound environment and wonderful echo reverberation generated. It is a magic voice changing microphone. There are five sound modes: original sound, child voice, female voice, male voice, old male voice. It can add more fun. LONG FUN TIME: Built-in 2400mAh rechargeable 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 doesn't take up space in your pocket when traveling, and you can take it out and sing at any time. EASY CONNECTION AND COMPATIBLE: Bluetooth and 3.5mm audio cable connection. This wireless microphone can easily connect any Bluetooth devices, such as Andriod/iOS/PC and YouTube, Smule, etc. apps. No need to download any special app. BEST GIFT: These karaoke wireless microphones display glowing dancing LED lights along with your voice and music volume to make you feel in the middle of the disco club. Not only kids but also adults will love it and have a lot of fun