How to factory reset the Infinity earbuds?

1.1 Place the earbuds into the charging case.

1.2 Press & hold the multifunctional button (MFB) on the inside of the case for about 8 seconds, or until the LED indicator on the left earbud turns pink.

1.3 The LED indicator will then start to flash red & blue alternately, indicating that the earbuds are now in pairing mode. Search for and select “Avantalk Infinity NC” / “Avantalk Infinity SO” from your device’s Bluetooth menu in order to connect.