The Energizer Keychain Light with Touch Tech technology combines the latest patented technology for easy, intuitive use With the switchless innovation of Touch Tech technology, users get instant illumination and a bright, uniform beam just by grasping the light Just release your grip when done using, and Touch Tech technology smoothly turns off the light Touch Tech technology ensures that your light is never left on accidentally and helps extend battery life With an impact-resistant construction, users get a durable experience suitable for a variety of tasks Simply grab and go with the ultimate, easy-to-use flashlight from Energizer Operates on 2 x CR2032 batteries (included)