UNIQUE SOUND QUALITY - This microphone has a high-quality intelligent mixing chip with 8 layered anti noise filter head, which will bring you clear reverberation and lowest noise, mix your voice with music smoothly and lift your voice to its highest-point WIRELESS CONNECTION - You just need to connect your device with Bluetooth, and then open the singing APP on your device. The built-in clearly audio and vividly sound effect can make you enjoy listening and singing anytime and anywhere HIGH COMPATIBILITY - This microphone supports micro TF card max 32GB(NOT INCLUDED) and song switch. The Bluetooth has a long distance of connection(10m), and compatible with Android, iPhone, iPad, IOS and all Smartphones (4.2.2 or higher version for Android system, 6.0 or higher version for IOS system) EASY TO USE - Multi-function buttons can adjust the Music, Echo, Volume and PA/R. Free to switch the previous and next song mode. Adjustable echo length effect can bring super surround with immersive enjoy. And the USB port allow you to plug USB and turn this magic piece to MP3 and play directly