Duracell CopperTop 9V Alkaline Battery (2-Pack) delivers dependable and long-lasting power for all your household devices. Featuring Duralock Power Preserve Technology, these batteries are to hold their charge for up to 5 years in storage. They are i for use in toys, remote controls, flashlights, calculators, clocks, radios, portable electronics, and more, ensuring reliable performance whe you need it. Model Number: 3961