It is a microphone and speaker at the same time, amplifying your voice with the press of a button. Echo adjustment and features controls for voice volume as well as effects! Wireless connection via Bluetooth with your mobile phone, tablet, or computer, playing the music you have stored from its powerful speaker while allowing you to sing along! USB and TFT ports: It can also operate independently, either for singing or simply to serve as an external speaker and play your music from any of your Bluetooth devices, loud and clear. Hands-free capability for phone calls: Connect your phone via Bluetooth and hear your caller clearly and loudly, while the built-in microphone means you won't need to use your phone's microphone. Small, portable, rechargeable, and features LED lighting!