The notification LED, located inside near the right temple, changes color to signal a change of status relating to power, the capture function, Facebook Assistant, and the call function. Power Power on: The notification LED blinks white for about 12 seconds, then turns green for a couple seconds to let you know your glasses are ready to use. Wake: The notification LED briefly blinks white then green to let you know your glasses are ready to use. Low battery: The notification LED blinks orange 4 times when your glasses have low battery. Shutdown: The notification LED blinks red 4 times when your glasses are about to automatically shut down when battery runs out, they get too hot, or too cold. Photo and Video Capture Photos: Both the notification LED and the capture LED blink white once when you take a photo. Videos: Both the notification LED and the capture LED turn solid white while you record video. Capture errors: The notification LED turns solid orange for about 3 seconds if it runs into a problem that prevents you from taking captures. Facebook Assistant Facebook Assistant: The notification LED will pulse white to let you know Facebook Assistant is listening. Calling Incoming call: The notification LED blinks white. Call connected: The notification LED pulses white while you're on a call.