Compatible with all MDHearingAid PRO, AIR, and CONTROL models, the MDHearing AMP, andthe Empower WAVE. Power your hearing aids with long-lasting size 13 batteries. Each battery can last between 20-40 days,depending on use and hearing aid model.
Made in the USA
For best results, keep batteries stored in original packaging with tab on until use. After removing theadhesive tab, wait one (1) FULL minute before inserting into device for battery to becomefully operational.