Acoustical Voice-Feedback Headset SOLO™ XL, Single, Grades 5-Adult, Pack of 2Make learning fun for older children and adults! WhisperPhone offers voice amplification to promote learning while providing a discreet design for every day use. The adult WhisperPhone is a great tool for speech training, literacy, vocal training, performing arts, and learning new languages. Durable, lightweight headset for hands free operation requires no batteries and carries a lifetime guarantee. Intended for individual use, but can easily be