This is My Mic: Bluetooth Speaker which can be used as karaoke mic to have fun at your house party or if you want to make an announcement just connect to a Bluetooth speaker and use this to use your phone's microphone as Mic.

My Mic: Bluetooth Speaker will enable you to:
 Use your phone microphone as karaoke mic.
 Records your voice and save them and share them.
 Use it to make announcements.
 Use it for house parties and contests or games.
Having this app in your phone is like having a microphone with you all the time.
Its ability to record your voice in high quality helps you in many ways:
 Use the recorder to record your meetings to take notes.
 Use to record your lectures.
 Use to record your singing.