Energy for your ears: The itsPREMIUM PR675 hearing aid batteries are an ideal everyday companion for over-the-ear and in-the-ear hearing aids of various styles and models. Made in Germany: The itsPREMIUM hearing aid batteries are manufactured with German quality, allowing you to enjoy their performance during outdoor and indoor activities! 3-year shelf life: The zinc-air batteries have a shelf life of 3 years. This means you can create your own backup stock and activate them as needed, as the batteries are as good as new even after 3 years of storage! No more surprises! Zinc-air technology: These batteries contain zinc only as an active component, yet they are the most energy-dense batteries among other types. For optimal performance and longevity, simply wait 30 seconds to 1 minute after removing the colorful sticker, and you're ready to go! Leak-proof: You can rest assured, as the unique composition and high manufacturing quality make the itsPREMIUM hearing aid batteries leak-proof - safe for you and your hearing aid partner!.