Energizer Hearing Aid Batteries, Zinc-Air, 312 - 16 Each , $19.99
1.4 vcc zinc air batts. Our longest lasting ever! Protects your devices from leakage of fully used batteries up to 1 week at room temperature. Replaces all size 312. www.energizer.com. www.energizer.ca. Packaging recyclable if available in your area. Made in Germany.