Much more than just watch batteries, Duracell coin and button batteries are also ideal for remotes, battery alarm clocks and many other devices. With guaranteed long-lasting power, Duracell coin batteries offer Duracell quality in a variety of sizes. Made with high-purity lithium for up to 50% more power vs. IEC Service Output test minimum average duration for 2016 Lithium Coins. Results may vary by device and usage pattern. up to 10 years of in-storage guarantee 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 Baby Secure pack: Tamper-proof pack with double blister so that it is impossible for a child to open without scissors. They are suitable for use in keyfobs, small remotes, scales, wearables, sensors, medical devices (glucometers, digital thermometers), sports devices (heart rate monitor, bike accessories). 2016 size batteries. Pack of 2.