Behind-the-Ear Hearing Aids fit comfortably behind the ear and are attached to an earmold to deliver the sound into the ear.
They are frequently used for more severe hearing losses or with ears needing ventilation.
Because the microphone is located further from the receiver there is less chance of feedback whistling than with the above smaller hearing aids. This design is flexible for use with telephones and assistive listening devices.
Completely In Canal (CIC)The smallest hearing aid is almost invisible in the ear.