Good to know - This Beurer hearing amplifer makes even the quietest whispers clear as a bell, both indoors and outside- It's medically certified so your ears will be in good hands- Find your perfect fit easily - it comes with 3 earpiece sizes - It has a wide frequency range of 200 to 5000 Hz with up to 40 dB of amplification- The protective storage box makes sure your auditory ally is always in top-notch condition