🔊 Hear the Difference with Signia! Experience a consistent 1.45V performance for all your hearing needs. Join the green movement with 100% mercury-free batteries. Effortlessly access one battery at a time with our unique delivery wheel. Enjoy extended usage with batteries designed for optimal performance. Perfectly suited for all hearing aids and scientific instruments. Long Life Mercury Free 1.45V Power The Signia Hearing Aid Battery Size 675 pack includes six powerful, mercury-free zinc-air batteries designed for optimal performance in hearing aids. With a voltage of 1.45V, these batteries ensure long-lasting reliability and are environmentally friendly, making them a smart choice for the eco-conscious consumer.