He could have used a headset that combines a microphone and a single earphone.

Hardly had she stepped from the room, before The Shadow reached beneath the table and drew out a single earphone.

Once the hole was made, he inserted a small microphone, then handed her a single earphone.

M. picked up the single earphone and leant towards it.

Gadgets rolled to his feet and put on a single earphone, allowing him to listen to whatever was said in the office rented by the terrorists.

She snatched the single earphone off the man's head, put it on her own, let the body fall and sat at the board.

The communications officer was smiling and holding a single earphone to his left ear.

The driver had long greasy black hair hanging to his shoulders, and wore dark glasses, blue overalls and a single earphone.

Most radios included earphone jacks and came with single earphones that provided only mediocre-quality sound reproduction.

The one on Wylie's head had a single earphone, leaving his other ear free.