The Pop-Up Oke Wireless Karaoke Microphone with Light Show Speaker from VocoPro is an all-in-one wireless Bluetooth microphone that has a built-in speaker, multicolor LED lights, and an MP3-tracks SD/TF memory card slot. It can be used to connect to your phone or tablet via Bluetooth, allowing you to use YouTube to enjoy karaoke entertainment, or use the onboard MP3 player to perform your own tracks (a memory card is required). In addition, the multicolor LED lights can be turned on or off and will dance to the beat of the music, which adds visual excitement to your karaoke session.