TV Ears 11241 Digital Premium Headset System, Black Made in the USA The proprietary "Voice Clarifying Circuitry" and "120 decibels of power" give hearing aid wearers the volume, tone, and clarity they need to make television dialog understandable The digital transmitter is strong enough to cover a 2000 sq. ft. room - charges two headsets and transmits Infrared at the speed of light so there is no delay Works with all television brands and connects to analog, digital, and coaxial audio outputs