Today's technology means that you have a wide range of options available to help with hearing loss. Hearing aid users report higher levels of involvement in social activities, fewer worries and more positive social and family experiences than those who have uncorrected hearing loss. Hearing instruments vary in style (size) and level of technology. Digital technology, which varies in level of sophistication, opens the possibilities of amplification to anyone with hearing loss. Of course a recommendation for hearing instruments must take into account degree of hearing loss, lifestyle, personal goals, sound quality, one hearing aid versus two, cosmetics and price. The need for one hearing aid or two should be determined by you and your audiologist. For most people with hearing loss, binaural amplification offers substantial improvement under both quiet and noisy conditions, along with a better sense of direction for locating the sound source. Just as eyeglasses do not "cure" vision deficiencies, hearing aids do not solve all hearing problems. But hearing aids can provide an important difference in your life and the lives of your family members. Batteries sold are Zinc-Air Batteries. All sizes are sold: 675, 13, 312, 10, and 5.