Rayovac Proline Size 312 Hearing Aid Batteries, 48 Batteries

One of the few Made in the USA Product. Never miss a moment with the world's longest lasting hearing aid battery! Rayovac Proline have 30% more battery life than other mercury-free hearing aid batteries. What's more, it's environmentally friendly, with consistent power and performance that rivals mercury-containing products on the market today.

Rayovac's Top of the Line Size 312 Batteries 48 Batteries per Box Mercury Free The Longest Lasting Hearing Aid Batteries in the World. Super Fresh, within the last 3 months with a long lasting 4-year shelf life.