This neat little coil feeds the Pixel C's parasitic keyboard, when it's connected in the proper screen-covering position.

Under the coil, we find a control board—probably responsible for turning boring old DC power from the battery into exciting, varying-magnetic-field-generating AC to power the coil.

We also get to peel out this record-breaking headphone jack port with the longest tail ever.

It actually does double duty as an interconnect cable for the inductive coil and the right speaker.