Open-fit hearing aid is a variation of the behind-the-ear hearing aid with a thin tube. This style keeps the ear canal very open, allowing for low-frequency sounds to enter the ear naturally and for high-frequency sounds to be amplified through the hearing aid. This makes the style a good choice for people with mild to moderate hearing loss.
An open-fit hearing aid:
Is less visible
Doesn't plug the ear like the small in-the-canal hearing aids do, making your own voice sound better to you
May be more difficult to handle and adjust due to small part