The most likely situation requires just the human ear — take it
from someone who has repeatedly discovered an AirPod at the bottom
of a purse pocket. Apple has added an alarm to help find earbuds
in proximity. Tap “Play Sound” in the iOS app and the AirPod will
start chirping. In the app, you can specify which AirPod you’d
like to sound. Only problem? If the AirPod’s battery runs out,
it’ll remain silent.
It will also track the last known location, and if you leave them at home, can use other devices within Bluetooth range to ping them. Good stuff.