TV Ears Original Wireless Headsets System, TV Hearing Aid Devices works best with Analog TV's, Hearing Assistance, TV Listening Headphones for Seniors and Hard of Hearing. Voice Clarifying, Doctor Recommended - 11641 Connects best to Analog TVs - for Digital TVs, look for TV Ears Digital Headset System. Voice Clarifying Circuitry with twice the Power at 120 db. Connects wirelessly to your analog TV. Television and headset volume function separately. Turn up your headset volume while others mute or set the television volume to their level. Ultra lightweight wireless headset for added comfort. Audio Frequency Response : 20 - 20,000 Hz Background noise reducing foam ear tips ensure maximum volume for the headset. For best audio quality, we recommend rotating the ear tips into different positions to align them with your ear canals 5 Year limited warranty.