I don’t see any earpiece, do see a lapel/lavalier microphone. The mic would have a battery/transmitter, but putting that in the small of her back is weird to me, as would be routing the mic wire up to her neck and back down.
“I don’t see any earpiece”
ntnychik said to zoom in on the photo...that it can be clearly seen. How does one do that in order to get a close-up of her ear...and still have definition?