These specifications are intended to help compare products based on your lifestyle, preference, and performace needs. OTC hearing aids are for adults 18+ with perceived mild-to-moderate hearing loss. They can be purchased without a medical exam, prescription, or audiologist fitting. This is not medical advice or a substitute for advice from a licensed hearing care professional. If you expereince severe hearing loss, ear pain, dizziness, ringing in ears, or other medical concerns consult a qualified healthcare provider.