Now you can sit anywhere in the room, or even leave the room, and hear clearly. The RF wireless transmission sends signals directly to the listener’s ears via radio signals that travel through walls and are not affected by bright lights. Perfect for that Plasma TV that interferes with the infrared signals. The under-the-chin style receiver has easy to use volume control wheel and adjustable ear bows for secure comfort. Stereo or mono operation. High gain - 125 dB SPL - for the moderate to severe hearing loss. Use direct to TV connection or place the microphone (included) next to the speaker. Uses rechargeable batteries (one included) that are charged in the transmitter and in the headset. Quick Charge feature. Two year warranty.