Technical specifications Speaker power：3wFrequency range: 100hz-10khz Maximum sound pressure level: >115dB 1KHz Thd<1% Reverberation mode: echo Effect Power supply: MA polymer Battery capacity: 2400mahCharging voltage: DC 5V/1AProduct weight: 385gPackage include:Charging cable *1Microphone *1Audio cable *1Manual *1How to use it？1.Switch on/off：press the button, the light will turn on/off (Press the power button for about 2S, when you hear a short music sound it means it's on.)2.Bluetooth connection：open your Bluetooth,Search device named AI807 and connect.When you heard a "Beep",it means connected successfully.3.Playing music:turn on your mobile music app, and play a song or accompaniment.4.Adjusting sound:adjust volume and echo to the best state.5.Starting singing and enjoying a great singing time.Note appended:1.It will connect automatically after the first connection. 2.If you disconnect, turn off Bluetooth on your phone, or delete device records from your Bluetooth management list.3.If you only want to listen to the song, minimize the volume of the microphone.4.Short press on the button "Silence",the original voice of the music will be diminished. 

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