PowerOne Size 312 Hearing Aid Batteries (120) PowerOne Size 312 Hearing Aid Batteries (120) Product Details BrandPower OneColorbrown tabSize312ManufacturerVartaProduct TypeHearing Aid Batteries Long Lasting, Mercury FreeStainless Steel CaseWill not rust like all other hearing aid batteries that are made out of TinTop of the line hearing aid batteries in the „Comfort Pack“All Power-One batteries are subjected to strict safety and quality checks Check out my other items. – Powered by