Corded/cordless phone system offers the best of both worlds with cordless mobility and corded reliability. Fully integrated answering machine makes it easy to screen calls and check your messages while away. Four, pre-set equalizer programs let you choose the sound quality that best fits your hearing. Easy-to-read display clearly shows phonebook and Caller ID information. Expandable system lets you put additional handsets (sold separately) wherever you need them. Compatible with most hearing aids.