These Duracell CR2032 Lithium Coin Batteries have +70% extra life* for your specialty devices. Recommended for use in Apple AirTag and suitable for use in key fobs, home devices like small remotes, fitness accessories and other wearables, medical accessories (glucometers, digital thermometers), scales, sensors, sports devices {heart rate monitors, bike accessories). Lastly, with up to 1 0 years in-storage guarantee, you can be confident they will be ready when you need them. *vs minimum average duration Electronic Key IEC standard test for 2032 Lithium Coin.