An exemplary behind-the-ear (“BTE”) hearing device has a side specific structure and includes a housing comprising: a proximal portion configured to be positioned towards an upper part of an ear of a recipient, the proximal portion having a curved shape configured to curve within a first reference plane such that the proximal portion is configured to follow a median shape of the ear when the BTE hearing device is worn by the recipient; and a distal portion configured to extend behind the ear when the BTE hearing device is worn by the recipient, the distal portion configured to extend within a second reference plane that intersects the first reference plane at an angle such that the distal portion is bent with respect to the proximal portion and is configured to extend toward a skull of the recipient when the BTE hearing device is worn by the recipient.