Power One Evolution Hearing Aid Batteries - Size 312- 1.45V Zinc Air Chemical Composition
IMPROVED BATTERY LIFE - The Power One Evolution Hearing Aid Batteries is the newest development from Power One that features high energy density and more capacity by increasing the battery life by up to 15% than the other Power One hearing aid batteries.
THIN FOIL TECHNOLOGY - The sealing on the Power One Evolution Hearing Aid Batteries feature Thin Foil Technology that results in increasing the hearing aid battery's capacity by 15%, giving you an extra 1 to 2 days of battery life.
