Rayovac Size 312 Hearing Aid Batteries provide reliable, long-lasting power for high-drain devices, including those used for wireless streaming. This 24-pack features a zinc air formula with a 1.45V rating and mercury-free construction. Each battery includes a long tab for easy handling and color-coded identification. The child-resistant packaging requires scissors to open the plastic dial, ensuring safety while keeping your batteries secure until needed. Replaces all size 312 batteries. EXPIRATION DATE 3/2029. Thank you for supporting my shop!