TV Ears now includes a patented, revolutionary ear tip not used in any other commercially available headphone. Providing exceptional comfort, clarity, and cleanliness, this tip was originally developed for use by the U.S. Military, and now provides TV Ears users the same exceptional sound clarifying technology. Within a few minutes after placement in your ear, the tip is warmed by the ear's heat and conforms to the inside of the ear. This reduces outside noise while creating an acoustically-sealed chamber for TV Ears to reproduce extremely natural sound, voices and dialog. DOCTOR RECOMMENDED TV EARS PRODUCTS TV Ears products are engineered to the highest quality standards available and designed to be durable and easy to use. Every TV Ears product has our proprietary Voice Clarifying Circuitry or our Voice Enhancement Technology which make words on TV jump out above the music and background noise found in most television programming. Our customers tell us that the TV sounds so clear they can't believe it!