The Duracell Size 312 Hearing Aid Batteries are high-quality zinc-air batteries designed for use in hearing aids. With a voltage of 1.45V, these batteries offer long-lasting power for your daily needs. The pack includes 16 batteries in total, perfect for ensuring you have a sufficient supply to last you for a while. The convenient 2-pack also makes it easy to stock up and never worry about running out of batteries again. Trust in the Duracell brand for reliable and dependable hearing aid batteries.