Description:? Rayovac L312ZA8ZM 8 Pack Battery for Hearing Aid Product Description Rayovac L312ZA8ZM 8 Pack Battery for Hearing AidRayovac&"s advanced manufacturing technologies ensure you receive a powerful consistent battery every time! In fact, no battery lasts longer! Rayovac&"s well-known dial pack features perforations to tear this package down to a portable, compact case with a ratcheting dial and a locking back door for added security.Long-lasting Mercury-Free Hearing Aid Battery.4 Year Freshness Guarantee.Stainless Steel Corrosion Resistance.Made in USA.8 Packages.Size: 0.313" L x 1.938" W x 4.25" H. - Ship Weight: 3.00 lbs. UPC Code: 012800511754