With the release of its second generation AirPods Pro wireless earbuds, Apple has added a U1 chip to the earbuds charging case, to allow for Precision Finding in “Find My.” A speaker built into the case can emit a sound to aid you in locating the case (and your new AirPods Pro, if they’re inside of the case.)
That speaker can also play an audible chime whenever you start charging the Charging Case, either via its Lightning connector or by putting it on a charging pad.
Some may not like this feature, so here’s how to toggle it off and on:
(Please note that the setting will remain grayed out if the Charging Case is currently connected to power.)