The Clarity® D704™ amplified and low vision cordless telephone with Caller ID display amplifies incoming sound up to 40 decibels and is 20 times louder than a standard home phone.The D704™ offers a vision solution featuring the largest keypad of any cordless phone, high contrast numbers, a backlit keypad that is easy to see at night, bright visual ringer and a large font CID display.The Clarity D704 uses patented Clarity Power™ technology, making hearing easy again by eliminating feedback and distortion, minimizing background noises while managing soft and loud sounds.For convenience, the D704 offers a handset speakerphone to listen hands-free at up to 40dB, plus it allows up to five expansion handsets to be used with each base (sold separately - CL-D704HS).Features:Amplifies incoming sounds up to 40dB or 20 times louder than standard phones4 customizable tone settingsMinimizes background noisesEliminates feedback and distortionEasy to see high contrast numbersContoured number keys with soft-touch materialBacklit keypadLarge font and high contrast Caller ID screenSpeakerphone in the handset10 speed dial memory buttons100 name/number phonebook with 10 memory buttons20 last number redial memoryBelt clipHear-It-Ring Clarity ringer has 10 loud and clear melodies plus 6 levels of volumeExpandable up to 5 handsetsLarge keypad and Caller ID display light up as a super bright visual ringerDirect connection to assistive listening devices or headset with 2.5mm jackRohs and TIA-1083 compliant