The Tianqiu CR2032 is a 3V lithium coin cell battery designed for use in small electronic devices. This single-cell battery offers reliable power in a compact disc shape and is commonly used in watches, calculators, key fobs, and other small electronics. Key features: • 3V lithium battery • CR2032 standard size • Long shelf life • Reliable performance • Compatible with watches, calculators and small electronics • Coin cell/button battery design The CR2032 battery uses lithium technology for stable voltage output throughout its lifespan. The battery features a diameter of 20mm and height of 3.2mm (hence the 2032 designation). For safety, please read all warnings before use and dispose of properly according to local regulations. Keep away from children as button batteries can be hazardous if swallowed.