PR44 A 6BS MF Air zinc battery for hearing aids maxell 53997589 - Standard: PR44, Nominal Voltage (V): 1.4, Recommended Expiration Date: 2 years | MonotaRO Singapore
Amazon.com: Hillflower 300 Pieces A675 Size 675 p675 675 PR44 Card 1.45V Heavy Duty Long Duration Hearing Aid Zinc Air Battery : Health & Household