1.45 volt Zinc-Air 10 Hearing Aid Battery. Rayovac hearing aid batteries, now brings you clear sound technology. Raising the benchmark of product innovation and providing consistent, quality performance through the whole life of the battery. Features New clear sound technology raises the benchmark of product innovation; Product updates made to support full-feature hearing aids; Improved cell design provides consistent, quality performance through the whole life of the battery; Enhanced formula reduces annoying early low battery tones and limits static and unwanted noise; 16 per Pack; Specifications Country of Origin: United States; Battery Size: 10; Battery Type: Zinc-Air; Battery Voltage: 1.45 volts; Weight: 0.3 lbs; .