This battery is sold in 2-packs Suitable for, among other things, the following: Clocks Camera Alarm transmitter Toys Calculator CMOS Backup GP's high-performance CR2032 lithium batteries have high energy density and can deliver 30% more power* to your specialty miniature devices, e.g. car keys, remote controls, smart watches, blood glucose meters, smart home devices, IoT devices, door and window sensors. With remarkable energy-carrying properties and a shelf life of up to 10 years when properly stored in a cool, dry place, you'll never be caught with empty batteries. They are manufactured to function even under extreme conditions and operate reliably from -20 °C to +60 °C. Safety comes first - these batteries are not only designed to protect your gadgets with leak-proof construction, but also to protect your loved ones with thoughtfully designed child-resistant packaging.