Energizer Lithium Coin Batteries provide long lasting, reliable power for everyday devices such as calculators, keyless entry systems and remote controls, as well as specialty devices like heart rate and other health monitors. Plus, they come in child resistant packaging to keep your loved ones safe. These are 3 V, CR2032 batteries. They have high energy density for consistent performance. They can be used in specialty devices like stopwatches, electronic organisers, heart rate monitors, remotes, keyless entry systems, toys, games and more. These batteries have an 8 year shelf life. These Lithium batteries have excellent leak resistance.