STEP 1 Turn on Libre
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pairing
Pairing mode
Tap and hold the left earbud touchpad for about 8 seconds
until led light turn on in from blinking red to solid green
Then Tap and hold the right earbud touchpad for about 8 seconds
until led light turn on in from blinking red to solid green
Two earbuds connect to each other automatically.
The LED light of main earbud (left channel) flashes in red & green, it
goes into pairing mode with your mobile phone automatically.