People with natural hearing loss or elderly who have steadily lost their hearing power can use a hearing aid. This is an electronic device that can be worn in or behind ear. This small device increases the volume of sound, so that people with hearing loss can comfortably listen and respond. This electronic device has made lives of many people worldwide easier. The battery powered device is composed of a microphone, an amplifier and a receiver. The ENT specialist after examining the condition can only suggest the use of hearing aid.