An open-ear headphone with an acoustic module that is configured to be located at least in part in a concha of an outer ear of a user. The acoustic module includes an acoustic transducer, and a sound-emitting opening that is configured to emit sound produced by the acoustic transducer. A body is coupled to the acoustic module and includes a first portion that is configured to pass over an outer side of at least one of an anti-helix and a helix and a lobule of the outer ear, and a second portion that is configured to be located behind the outer ear.