Hearing aids can't restore normal hearing. They can improve your hearing by amplifying sounds that you've had trouble hearing. How hearing aids work Hearing aid parts All hearing aids use the same basic parts to carry sounds from the environment into your ear and make them louder.  

A hearing aid has three basic parts: a microphone, amplifier, and speaker. The hearing aid receives sound through a microphone, which converts the sound waves to electrical signals and sends them to an amplifier. The amplifier increases the power of the signals and then sends them to the ear through a speaker.

They type of hearing aid

BTE (or "on-the-ear") aids: A new type of BTE aid called the mini BTE (or "on-the-ear") aid. It also fits behind/on the ear, but is smaller. A very thin, almost invisible tube is used to connect the aid to the ear canal. Mini BTE ’s may have a comfortable ear piece for insertion ("open fit"), but may also use a traditional ear mold. Mini BTE ’ s allow not only reduced occlusion or "plugged up" sensations in the ear canal, but also increase comfort, reduce feedback and address cosmetic concerns for many users.

In-the-ear (ITE) aids: All parts of the hearing aid are contained in a shell that fills in the outer part of the ear. The ITE aids are larger than the in-the-canal and completely-in-the-canal aids (see below), and for some people may be easier to handle than smaller aids.

What kind of hearing aid ENNO have?

ENNO hearing aid EN-IA013A ITE portable rechargeable hearing aid (fashionable design without ear dome) 

Hearing aid Without ear dome, especially simple and convenient

1. Microphone input/indicator

2. Multi-function finger touch switch ( user control)

  Mode adjustments

  Press and hold for 2 seconds

  Volume adjustments