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How to use i9s:
1. Press the charging case, and then remove the two headphones when it opens.
2. Wait for 10 seconds and let the earphones pair automatically. When one earphone indicator is on and the other earphone indicator is off, the pairing is successful
3. Please turn on Bluetooth and search for i9s connection. When the indicators of both headsets are off, it means that the headset is successfully connected to the phone, you can use it immediately.
1. No need to press the buttons of two pairs of headphones, just click the charging box to connect the headphones automatically.
2. Press any headset twice to change the language.
3. Please fully charge before use.