The Rayovac Sz 312 Hearing Aid Batteries 80 Pack are high-quality, disposable batteries designed specifically for hearing aids. With an expiration date of JAN 2027, these batteries ensure long-lasting power for clear and amplified sound. Manufactured in the United States by Rayovac, a trusted brand in the industry, these batteries provide reliable performance for individuals in need of hearing assistance. Ideal for daily use, these batteries offer a convenient and efficient solution for maintaining optimal hearing health.