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POWERFUL: Purest sound quality – Meets the requirements of next-generation hearing aids with wi-fi functions Patented cathode technology guarantees excessive and stable cell voltage Reliable performance: Consistent functionality over the entire battery life, even in extreme environmental situations because of the triple coating and corrosion-resistant chrome steel housing three years of storage: reliable calories source even after years of garage - thanks to a unique energy conservation formulation and patented PTFE film that stops untimely discharge or drying out of every cellular Easy to use: the battery replace is well executed by means of peeling off the film Safe dealing with due to a rotating dispenser that stops accidental elimination of cells