Rayovac Size 312 Hearing Aid Batteries offer powerful performance at a great price. With advanced zinc air technology, these mercury-free batteries are ideal for your hearing aid devices, ensuring you stay connected with crystal clear sound. Each pack contains six batteries with longer, wider tabs, making them easier to handle and replace. Engineered in the USA with a focus on durability and affordability, Rayovac delivers the power your hearing aids need to function at their best.