earphones

2. A pair of small speakers worn over the ears, often connected to a radio or music player.

He carried his earphones in his pocket so he could listen to the radio.

3. Devices used with a phone or computer for private listening and calls.

The earphones have a tiny microphone so you can talk on the phone.

4. Protective hearing devices worn to block loud noise.

Workers wore earphones to protect their ears from the loud machines.