Duracell CR1632 lithium battery. 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. They have 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 and discourage swallowing, Duracell has developed the Baby Secure Technology, a bitter taste layer applied on the back side of the cell, and has designed a Baby Secure pack, tamper-proof pack with double blister so that it is impossible for a child to open without scissors. Leak-resistant construction, fully sealed and packaged in original retail packaging. Sourced only from authorised UK distributors. Covered by full manufacturer warranty.