headsets

a set of headphones, especially one with a microphone attached to it

an electrical device that consists of a part that fits over a person's ears and a part into which the person can speak, used for communicating over a telephone or by radio without using the hands

a piece of equipment worn on the head that allows someone to hear sound when using a phone, music, or computer system. Headsets sometimes have a microphone (= a part you speak into):

Examples: