Long lasting power guaranteed the Rayovac 312 Sized Hearing Aid batteries are built to last at least two days longer than other hearing aid batteries! 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. Rayovac hearing aid batteries are now mercury-free for an earth-friendly, high performance, Green Choice for power.
- Improved Packaging and Longer Battery Tabs
- Lasts up to two days longer than our previous formulation
- Made in the USA with US and Global Parts
- Mercury-Free – Friendly for the environment