6 ZeniPower Batteries,Mercury Free Size 675 Zinc Air Hearing Aid Batteries. (6
batteries Standard dial pack, 10 cards of 6 cells each). ZeniPower hearing aid
batteries and cochlear batteries, is the only zinc air button battery
manufacturer in China. With over 21 years in research and development and a
patented unique technology, you will be satisfied with ZeniPower zinc air
batteries. Hearing aids using zinc air battery size A10 to A675. You can
expect fewer battery replacements, clearer tones, less distortion, fewer
volume adjustments, and longer service life.