What does the LED on the outside of the case signify?

The LED light on the outside of the case signifies the charge status of the Here Buds.

When the case is not plugged in:

While the Here Buds inside are charging, the LED slowly ‘breathes’ an amber color. When the Here Buds inside are fully charged, the LED turns green.

If the LED is flashing green, it means the case only detects one of your Here Buds, and that Here Bud is fully charged.

When the case is plugged in:

If the Here Buds are inside the case, the LED will slowly ‘pulse’ an amber color while the case and buds are charging. When the case and buds are fully charged, the LED will turn solid green.

If the LED is blinking quickly rather than ‘breathing’, it means that 1 or both Here Buds are not in the case or are not being detected by the case. To remedy this, open the lid, remove the buds, reinsert them, and close the lid.