Completely-in-the-canal (CIC) hearing aids
Completely-in-the-canal hearing aids (CIC) were the smallest hearing aids available before the IIC hearing aid was introduced. The CIC is still rather discreet, however, and the only visible part is typically the face plate and battery drawer.
Are custom-made to fit discreetly inside the ear canal
Are mostly invisible to those around you
Can accommodate an optional button that allows you to manually control settings for different environments
Can be vulnerable to earwax and moisture build-up
Need adequate ventilation when they are used
Invisible-in-the-canal hearing aids (IIC) are the smallest hearing aids available. These custom-made hearing aids fit fully inside your ear canal, making them almost, if not completely, invisible. Tiny cords are attached to the hearing aid so that you can remove them easily.
Adapt automatically to the sound environment
Have a discreet style
Can be vulnerable to earwax and moisture build-up
Are better for minimizing wind noise (due to their placement)
Do not have a directional microphone
Can be difficult to adjust for those with dexterity issues
Invisible-in-the-canal hearing aids