Duracell Silver Oxide Coin Button batteries have a 3-year guarantee in storage with Duralock Power Preserve Technology, so you can be confident these batteries will be ready when you need them. They offer long-lasting power for your specialty devices such as watches, calculators and medical devices. Battery Type: Lithium
Battery Size: 10
For Use With: Hearing Aid
Voltage: 3 V.
Unit of Measure : Pack