New improved technology delivers excellent value and provides end users and distributors with a premium-quality, long-lasting, and dependable power source they can trust to perform in a wide range of important professional devices. Dependable, long lasting power with up to a 7-year freshness guarantee. Operates reliably in temperature extremes of -20° C to 54° C. Date coded to guarantee freshness. Economical bulk packaging for professional applications. Contains no added mercury.