Increases the volume level of incoming voice up to six times the non-amplified level. Ideal for anyone who has a hearing loss or for use in noisy locations. Separate controls allow you to fine-tune the sound level and clarity of the incoming voice independently for the clearest and most comfortable setting. Tone control compensates for the common high frequency loss by increasing the higher frequency sounds. Works with most AT&T telephones. Misty cream color. ME351