By pressing the button on the outer box of the Bluetooth headset, you can reset the headset and make the headset enter the start pairing state. In this way, you can turn on the Bluetooth phone to scan the Bluetooth headset and complete the pairing with the Bluetooth headset.
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The button on the outside of the Bluetooth ear case is used to pair the Bluetooth headset with the mobile phone, and is also the Bluetooth restart button, which can restart the Bluetooth headset to connect to other devices.