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Duracell Batteries, Hearing Aid, 312
DA312B16. 1.45 V zinc air. 0% mercury (vs previous product). Duralock Power Preserve. Now longer lasting. Replaces all size 312, including DA312, AC312, AZ312EZ, 312AE, 312HPX, B374PA and PR41. 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.