Headset

Noun

 * 1) A pair of headphones or earphones, or a singular headphone or earphone, typically with an attached microphone.
 * 2) On a bicycle, the system of bearings that connects the fork to the frame.

Thesaurus
acoustical network, capacitor speaker, coaxial speaker, cone, crossover network, diaphragm, dynamic speaker, earphone, electrodynamic speaker, electromagnetic speaker, electrostatic speaker, excited-field speaker, full-fidelity speaker, headphone, high-fidelity speaker, high-frequency speaker, horn, loudspeaker, low-frequency speaker, midrange speaker, monorange speaker, moving-coil speaker, permanent magnet speaker, radiophone, radiotelephone, speaker, speaker system, speaker unit, triaxial speaker, tweeter, voice coil, wireless, wireless telephone, woofer

Etymology
From head + set.

Translations

 * Finnish:
 * French: casque, casque-micro,  micro-casque,  casque avec microphone


 * Hungarian: ,
 * Russian: наушники