Sing along to your favorite songs with this Vivitar Bluetooth Karaoke Microphone. This karaoke microphone and speaker are Bluetooth compatible so you can connect easily without holding up the party. The microphone also has professional adjustment buttons to help you get the proper sound. Professional adjustment buttons offer more control. Reverb can be adjusted by the microphone. Dynamic 2-in-1 Bluetooth wireless microphone and speakers for convenience. Compatible with Bluetooth-enabled smartphones. Can be used as a wireless speaker, voice recorder and a loudspeaker.