Increased battery life for longer service and lower operating expenses. Manufactured to rigid specifications to meet some of the highest standards of durability and longevity that professional users demandand expect, the Procell outperforms the rest. Procell batteries deliver outstanding performance with a 7-year freshness guarantee backed up with date coding. Reliable operations in temperatures between -20 to 54 degrees Celsius. This battery contains no Mercury so there is no disposal issues. 1.5 volt alkaline battery. 12/pk.