The Camelion A13 PR48 Zinc Air Hearing Aid Battery provides powerful output with large capacity providing stable power for electronic devices. Mercury and cadmium free reducing unnecessary pollution to the environment. Specifications:Chemistry: Zinc Air IEC Name: PR48 ANSI/NEDA: 7000ZD Voltage: 1.45V Weight: 0.84g Dimension: 7.9 x 5.4 mm Capacity: 250mAh