lavaliere

When I was a child, my father gave me a necklace called a lavaliere.

For our taped conversations, we had switched from handheld microphones—because it was too difficult now for Morrie to hold anything that long—to the lavaliere kind popular with TV newspeople.

The lavaliere was concealed in tall grass immediately beneath the window of Carpenter's room, and thus had at first escaped the eyes of the police.