Rayovac Mercury Free Proline Advanced Size 312 Hearing Aid Batteries, Total of 48 Batteries
NEW 48-pack of Rayovac Mercury-Free Proline Advanced Size 312 Hearing Aid Batteries direct from Rayovac within the last 30 days. These batteries are guaranteed by Rayovac and the Hearing Aid Battery Club to be the longest lasting hearing aid batteries in the world today. Keep all hearing all batteries in a cool, dry place that's free of moisture and extreme temperatures.