мини-телефон усилитель

telephone amplifier, amplified phone Designed to help those hard of hearing or use in noisy locations. Not only does it allow you to increase the incoming receiver volume, it also adjust the high-frequency sounds to desired listening level as well. Works with either analog or digital telephone with a cord between the phone base and handset. Connects easily between your phone base and handset. 1.telephone amplfier 2.used to amplifier phone voice 3.good quality hearing aid accessories