Duracell Specialty 2450 lithium coin batteries are made with high-purity lithium for reliable, long-lasting power for your specialty devices. They stay fresh and powered up to 10 years in ambient storage (storage conditions between 10°C and 25°C) so you can be confident these lithium coin batteries will be ready when you need them. To help ensure the safety of your children, they have been designed with Child Resistant Packaging: Tamper-proof pack with double blister so that it is impossible for a child to open without scissors. They are designed for use in keyfobs, small remotes, scales, wearables, sensors, medical devices (glucometers, digital thermometers), sports devices (heart rate monitor, bike accessories).