60 Pack Size 312 Batteries, Brown Tab, Zinc Air - Bulk pack of 60 Energizer size 312 hearing aid batteries with brown tab and advanced zinc air technology. Reliable, long-lasting power for digital and analogue hearing aids, ensuring clear sound. Batteries stay fresh for up to 4 years, offering great value and convenience. Safe, mercury and cadmium free, meeting EU safety and environmental standards. Manufactured in the UK for consistent, dependable performance from a trusted brand.