Product Description Size:2 Count Product Description This pair of three-volt lithium coin batteries is perfect for watches, fitness or healthcare devices, and other electronics. 20mm diameter and 2.5mm height. Maxell CR2025 Three-volt lithium coin batteries perfect for watches, fitness or healthcare devices, and other electronics. Maxell 2025 Watch This battery may last the lifetime of your equipment. Why Lithium? The most significant advantages of lithium batteries is long shelf life at room temperature, good low temperature operation, high operating voltage and excellent leakage resistance. In many cases this battery can become a permanent component for the lifetime of your equipment. Lithium advantages: High energy density High voltage Long shelf life Wide temperature range for operation and storage Leak resistant Suitable for pulse discharge Ideal Standby power source About Energizer Energizer made watch winding a thing of the past, and continues this legacy today by making batteries for many electronic devices that have come along since then: car alarms, digital thermometers, PDAs, handheld games and more. Every day Energizer strives to make their small batteries more powerful and reliable. What's in the Box Pair of Maxell CR2025 Lithium Coin Batteries