Hear every moment thanks to Duracell size 312 size hearing aids. Simple operation and replacement thanks to very long Easy Tabs and easy-opening packaging are the features of Duracell hearing aids, color-coded, so you can easily find your size. In addition, Duracell hearing aid batteries use Duralock technology, which allows them to withstand up to 4 years, if stored at ambient temperature. TECHNICAL SPECIFICATIONS Type: BatterySize: DedicatedLink: Zinc-AirVoltage: 1.45 voltsNumber in the package: 6Charger included: No.