These Duracell size 312 hearing aid batteries are designed to operate perfectly in a range of different branded hearing aids. They boast 0% mercury and no added lead.
Duracell use the industry-standard colour code which can usually be found on battery tabs and packaging. These particular cells are size 312 so they use the colour Brown.
These size 312 cells can also be known as DA312, PR41, AC312 or ZA312 batteries.