Size 13 batteries can be used with the MDHearingAid PRO and AIR models.
One box contains 40 Mercury-Free, 1.45V Zinc-Air hearing aid batteries. Made in the USA.
For best results:
After removing the adhesive tab, let a new battery sit for at least one (1) minute before inserting into device. Keep batteries stored in original packaging with tab on until use.
1 Box Size 13