This Wireless Karaoke Microphone can also be used as BT speaker, and supports changing voice and eliminating background sound at one button. And it also supports playing music via TF card to save your mobile data. Besides, it is charged by USB cable, charging it anytime, anywhere. Feature: 2-in-1 Design This handheld wireless microphone can be used as a karaoke microphone and a BT speaker. And it adds colourful led lights to bring more fun. High-quality Sound Adopting high-fidelity moving coil mic, it effectively shields interference from environment and picks up your voice accurately. Support TF Card Playing You can also insert TF card to enjoy music without worry about monthly limited mobile data. Flexible Power Supply Powered through USB cable, you can charge it by laptop, Power Bank, power adapter, etc. And with built-in large-capacity battery, you can use it for a long time. Easy to Use It offers several buttons, pressing specific button to turn on/off, adjust mic vol, remix vol,