Body worn hearing aids are equipped with a small box that clips to clothes or fit inside a pocket. It is connected by lead to the earphone. Most people find these controls less fiddly than those on smaller hearing aids. This type of a hearing aid was the first one to be invented, and was invented by Harvey Fletcher. Body worn hearing aid consists of an earmold and a case. The case consists of an electronic amplifier, battery and controls. The earmold consists of a little loudspeaker. The size of the case is approximately the size of a pack of playing cards, and it is usually worn in pocket or belt. Beside the disadvantage of being big it provides long battery life and large amplifications, and its price is not expensive. Therefore they are still being produced even though not as much as before and sold despite many modern and probably better hearing aids. Usually older people prefer this type of hearing aid because they feel that it is easier to be handled with because they have large controls which are better visible for older people. These hearing aids can be very powerful, therefore very good in function for people with severe hearing problems.