earphone

US /ˈɪr.foʊn/
UK /ˈɪr.foʊn/
1.

tai nghe

a piece of electronic equipment, usually one of a pair, that you put into or over your ear so that you can listen privately to the radio, recorded music, etc.:

:
a pair/set of earphones (= these two objects and usually also the wire or piece that joins them)