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.

PSBTW, the Lightning port is indeed still modular—theoretically replaceable if it breaks, if you can scrounge up a replacement.