The in-ear portion of the Ear (1) houses the driver assembly, while the battery stays in the outer half of the head.

Besides the driver, we find a microphone on this flex cable assembly similar to the one we found in the AirPods Pro. It's positioned to detect in-ear noises for more effective active noise cancellation (and probably helps isolate your voice for clearer calls, too).

The driver used in the Ear (1) measures 11.6 mm and the voice coil has a diameter of 5.7 mm.

The last component of the in-ear portion is the tiny driver grille, quickly pushed aside with the help of a spudger.