Rayovac Size 312 Extra Advanced Hearing Aid Batteries + Battery Holder Keychain Kit (40 Batteries)

Rayovac Extra Advanced Hearing Aid Batteries, 40 Size 312 + Battery Holder Keychain Kit (40 Batteries) Includes 2 Cell Battery Holder Keychain Rayovac provides the optimal energy solution for almost every device. With world-class manufacturing techniques and continual quality testing and improvment, you'll be assured of the highest product performance in each and every battery. Rayovac's zinc air cell design provides precision air flow, maximizing power and maintaining performance. 3-4 Year Shelf Life, Made in the U.S.A. The world's longest lasting Mercury Free hearing aid battery.

Includes 2 Cell Battery Holder Keychain Rayovac provides the optimal energy solution for almost every device. With world-class manufacturing techniques and continual quality testing and improvment, you'll be assured of the highest product performance in each and every battery. Rayovac's zinc air cell design provides precision air flow, maximizing power and maintaining performance. 3-4 Year Shelf Life, Made in the U.S.A. The world's longest lasting Mercury Free hearing aid battery.