TV Ears 10321 2.3 System Wireless Headset System (Blue) (Discontinued by Manufacturer) Doctor Recommended Infrared transmitter covers 600 square feet, Made in China Transmitter works as a charging base and can hold up to two headsets Powerful headset with 120 dB of output 3 times more powerful than other headsets Headset Includes volume and tone dials TV Ears Tips provide comfort and cleanliness