Premium product with the best power supply for hearing aids. Provides high and stable voltage levels. Reliable, long-lasting energy with highest quality and performance allow hearing aid users to hear clearly, communicate effectively and improve their quality of life. The premium batteries provide stable voltage for wireless streaming, enabling a more efficient connection and clear sound with audio devices. All VARTA hearing aid batteries have a high-quality, leak-proof design ensuring safe performance for consumers to enjoy their independence. Guaranteed storage time of 4 years Mercury-free and leak-proof battery Guaranteed battery compatibility to all hearing aid devices Stable voltage and clear sound for bluetooth connections and wireless applications Up to 110% more energy vs. IEC 60086-2 Ed. 14.0 wireless streaming test MAD Up to 40 hours extra runtime for your hearing aid vs. IEC 60086-2 Ed. 14.0 hearing aid standard test MAD Strong brown color coding on blister and battery tab C