This cordless phone is hard to beat! It has all the features you could want in a telephone. Amplification of 50 dB and separate tone control make it perfect for anyone with a mild to severe hearing loss. The Digital Clarity Power™ technology provides intelligent amplification to make soft sounds audible, while keeping loud sounds bearable. The ergonomically shaped handset is shaped to cup the user's ear for a custom fit. It works well with a hearing aid, reducing background noise and feedback. The large display screen with white LCDs accommodates the visual needs of most users. The buttons on the handset are well spaced for accurate dialing. With the extra loud ringer and bright flashing ring indicators, you'll never miss a call. Other features are an amplified speakerphone and a integrated digital answering machine and a Caller ID/Call Waiting display. If this isn't enough, this phone is expandable. You can add up to three additional C4230HS™ DCP™ cordless handsets without needing another phone jack. The 50 dB handsets come with a charging base and will automatically register to the C4230™ base phone. Is that all? No, the C4230 base phone will also accept the alerting accessories, the remote lamp flasher and the bedshaker, shown on page 2. This is the most sophisticated, feature-packed, amplified telephone we have.