Don't let their small size fool you: This Energizer 2032 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our coin batteries are compatible with the devices that fit your life, so you can keep going. Responsibly designed with zero mercury and child-resistant safety packaging to keep your little one safe, it's easy to see why Energizer Lithium Coin Batteries are the right choice for your specialty devices.