DA10B8ZM. 1.45 V zinc air. 0% mercury (vs previous product). Duralock Power Preserve. Now longer lasting. Replaces all size 10, including DA10, AZ10EZ, AC10, 10AE, 10HPX, B20PA and PR70. No. 1 trusted brand of doctors & pharmacists. Easy tab. Easy-of-use Arthritis Foundation. arthritis.ca. Arthritis friendly. The Arthritis Society. Guaranteed 4 years in storage. Printed on recycled paperboard. No mercury added. Made in Germany.