The two least visible styles are invisible in the canal (IIC) and completely-in-the-canal (CIC) hearing aids.
An invisible-in-the-canal hearing aid fits deeper into the ear canal. It is invisible and is easy to use with phone; while it equires dexterity to change batteries and the batteries have short life.
A completely-in-the-canal hearing aid is molded to fit inside your ear canal. It improves mild to moderate hearing loss in adults.It is the smallest and least visible type.
Key words: invisible hearing aid; invisible hearing aids.