Hearing Aid is a small amplifying device which fits on the ear, worn by a partially deaf person. It is one of the most important device for a deaf person. It is very Small Size and Light weight and could easily carried by anyone.The other thing is that it is cheap and could easily accessible.
Extreme reliability, Longer life, Higher gain, Higher power, Low distortion can be fitted from the mildest to the severest hearing losses, even for the so called “deaf & dumb” Especially adaptable for old age nerve loss (sensory neural loss), conductive loss and other losses such as congenital loss (those born with hearing impairment). Helps to hear weak telephone conversations. Universal, Super, Super AVC, Extra Super & Push-Pull models can be used in Deaf Schools for Loop System / direct listening for training simultaneously. Amazing ruggedness. A car with three passengers was driven over the hearing aid FIVE times. The Hearing Aid still worked. (It was, however, scratched somewhat!). Even village shops sell these little batteries. Tremendous economy. Special type batteries no more required.