The following are common hearing aid styles, beginning with the smallest, least visible in the ear. Hearing aid designers keep making smaller hearing aids to meet the demand for a hearing aid that is not very noticeable. But the smaller aids may not have the power to give you the improved hearing you may expect.
Completely in the canal (CIC) or mini CIC
A completely-in-the-canal hearing aid is molded to fit inside your ear canal. It improves mild to moderate hearing loss in adults.
A completely-in-the-canal hearing aid:
Is the smallest and least visible type
Is less likely to pick up wind noise
Uses very small batteries, which have shorter life and can be difficult to handle
Doesn’t contain extra features, such as volume control or a directional microphone
Is susceptible to earwax clogging the speaker