There are plenty of choices for the hearing impaired person who wishes to use a hearing device. There are aids that fit in the ear and those that fit completely in the ear canal. For cosmetic reasons alone you would expect these to be very popular. Yet the most commonly used hearing devices are Behind the Ear Hearing Aids.

Behind the ear hearing aids are constructed of an ear mold that fits in the ear and a piece of tubing that goes from the ear mold to the hearing aid. This tubing is called the tone hook. The hearing aid has an on and off control, a volume control, and a battery compartment.

There is a microphone on the top on the hearing aid. The sounds are sent to the ear through the tubing and then the ear mold fitted into the ear.