Professional tuning button，High pitch / bass/volume/Accompany/reverberation all can be adjusted via this microphone.Bluetooth wireless Microphone and speaker 2 in 1 , can work independently without extra connection. Microphone head has three times noise reduction handle , more efficient to highlight your beautiful voice. 2600mAh Battery for up to 8 hours of Singing, Enjoy Karaoke effects with the Smartphone APP High compatibility , fit for iOS and Android smartphone iPad tablet , can read USB card , bluetooth connection.