Power One Mercury Free Hearing Aid Batteries Size 312, 4 Pack of 60 Batteries (240 Batteries)

A long service life with a guaranteed high cell voltage thanks to a patented cathode technology makes frequent battery changing redundant and promises the best sound. Each individual cell is tested for its electrical and mechanical characteristics in accordance with its specifications. A highly developed film seal for every cell guarantees that the battery does not dry out or drain prematurely. The stainless steel housing provides high-level stability and safe protection against corrosion.