LR44 batteries are commonly used in watches, children's books, hand-held video games, pen lights and calculators. Duracell LR44 button cell battery is backed by Duracell's guarantee for long lasting, quality batteries and is the premier choice to power these and any other device that requires an LR44 battery.LR44 Batteries will replace batteries used by the new Robo Fish set of children's toys.Duracell LR44 button cell batteries will provide continuous power for devices that require long lasting, low power batteries. They are guaranteed to work in extreme temperatures and will keep your devices powered no matter where you are or what you are doing.Customers can trust Duracell to provide the best in quality and performance for all their battery needs.