In-the-Canal (ITC)—ITCs sit in the lower portion of the outer ear bowl. ITCs are comfortable and easy to use. ITC hearing aids are slightly larger than CIC hearing aids and have a longer battery life. Most ITCs can host additional features, such as directional microphones and volume control.
Half Shell (HS)—HS hearing aids fill about half of the bowl of the outer ear. The larger size of the HS hearing aids makes it possible for patients to add directional microphones, volume control, and buttons for special settings. The HS is easier to handle for some people than the ITC hearing aids.
Full Shell/In-the-Ear (ITE)—Full shell models sit flush with the outer ear bowl. ITEs offer the maximum number of controls and features. ITEs can be outfitted with directional microphones for better listening ability in noisy environments. ITEs can produce more power and may be suitable for people with severe listening problems.