This little silver guy lives near the top, right between the charging pockets for the 'Pods. What's it for? It looks a bit like a microphone.

Did we say "battery" before? Make that batteries—two of them! Or two cells at any rate.

At 1.98 Wh, the Pro battery flexes solidly on the amateur AirPod 2's single-cell 1.52 Wh case battery, as well as the 1.03 Wh Galaxy Bud case.