40 Duracell Batteries, Size 13 Zinc Air Hearing Aid Batteries. Tips- Keep them in their protective packs and storing them at room temperature. Never remove the color-coded tab from a battery until you are ready to install it in your hearing aid.
1.45-Volt zinc air hearing aid batteries (40 total batteries)
Reliable, long lasting power for your hearing aid
Easier to open, compact, discreet and totally protects your batteries
Duracell Hearing Aid Batteries EASY TAB