Pocket hearing aids are the type of hearing aid that is placed or attached to the pocket or to the belt. This type of hearing aid is specially designed for those people who have a greater problem when it comes to hearing or those that have profound hearing loss. It is attached through the pocket or the belt and is connected or linked through a wire to your ears and because of its large size as compared to other types of hearing aids, it is able to incorporate many signal processing options, but it is usually used only when other types of aids cannot be used.