Dual magnetic speaker, noise-reduce technology
the surface was made of radium and electroplating
built-in bluetooth code, wireless & wired both can connect
wireless singing: switch on, bluetooth connection, music play, vocal volume, start karaoke. Song recording on cell for phone/pc/ipad: audio cable connection, cell phone connection, open app, debugging and save the song. Usb cable to charge, 4 hours to fully charged, it can be used continuously on the microphone. Answer a call: it can be after the microphone connected to the cell phone.