This is the wireless TV audio transmitter that adds voice clarifying technology to any headphones to help viewers hear dialogue more clearly. Unlike lesser sound amplifiers that simply increase the volume, this device uses proprietary technology that isolates voice frequencies, lifting dialogue audio without increasing a program’s background noise or music. The transmitter connects to a TV via included analog or digital cables and sends audio to the wireless receiver up to 95' away. The included ultra-light earphones (or existing headphones using 50 ohm or less) plug into the compact clip-on receiver’s 3.5mm jack, essentially converting them into wireless headphones for TV viewing. With left/right balance adjustment and three pre-set sound profiles to customize audio for maximum listening pleasure. Transmitter plugs into AC; receiver provides 12 hours of clear audio on a 3-hour charge from the transmitter. Transmitter 2" H x 1 3/4" W x 10 1/2" L; receiver 1" H x 1" W x 3 1/2" L.