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Duracell - Hearing Aid Battery: Size 312, Zinc Air - 66994336 - MSC Industrial Supply
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Walgreens Hearing Aid Batteries, Zero Mercury #312 | Walgreens
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Energizer Size 312 Hearing Aid Batteries - Brown : Target
Amazon.com: Power One Size 312 Zinc Air Hearing Aid Batteries No Mercury (42 batteries) : Health & Household