Duracell Silver Oxide Button Batteries provide reliable, long-lasting power for your specialty devices. They have up to a 4-year guarantee in storage so you can be confident these silver oxide button batteries will be ready when you need them. Duracell Silver Oxide Button Batteries are great for devices like glucometers, calculators and car remotes. And you can be assured that they?re batteries you can trust because Duracell is the #1 trusted battery brand.