FEATURES : portable, handhold, wireless, a magic microphone. Using the wireless Bluetooth. A variety of colors to choose from to show your personality. Built-in sponge anti-spray core, suppress noise, highlight the original sound, help you discover more attractive voices. goodbye wired microphone TWO WAYS CONNECTION : Bluetooth Connection & Cable USB Connection. USB Charging head output does not exceed 2A. You just need to connect your phone with cable or Bluetooth, and then open the singing APP on your phone. The built-in clearly audio and vividly sound effect can make you enjoy listening and singing anytime and anywhere EASY to USE : Multi-function buttons can adjust the Music, Echo, Volume and PA/R. switch the previous and next song mode. Adjustable echo length effect can bring surround with immersive enjoy WIDELY USE : Keyian microphone supports Android, iOS and all smartphone, and it can be easily connected via Bluetooth, even at a distance.Karaoke Microphones make guests at any party - and are designed to make you the star of any scene