Duracell CR2016 Coin Lithium Batteries are long-life guaranteed for your specialty devices. Suitable for use in key fobs, small remotes, fitness watches and other wearables, scales, sensors, medical devices (glucometers, digital thermometers), sports devices (heart rate monitors, bike accessories). Lastly, with up to 10 years in-storage guarantee, you can be confident they will be ready when you need them.