The Energizer Hearing Aid Batteries Size 10 are high-quality, long-lasting batteries designed specifically for use in hearing aids. With a battery size of 10 and a chemical composition of Zinc-Air, these batteries offer reliable power for extended periods. A lot of 4 each pack contains 6batteries for 24 batteries total, providing ample supply for a month or more. Manufactured by Energizer in the United States, these batteries have an expiration date of March 2028, ensuring freshness and performance. Ideal for individuals in need of dependable power for their hearing aids, these batteries are a trusted and convenient solution.