This is not a phone system. It is an additional or extra handset for an existing system. Quick Overview The Clarity D704HS? is an additional handset for expanding the D700 series of Clarity telephones D704, D714 and D724 around your home. Details The Clarity D704HS? is an additional handset for expanding the D700 series of Clarity telephones. Features: Amplifies incoming sounds up to 40dB or 20 times louder than standard phones 4 customizable tone settings Minimizes background noises Eliminates feedback and distortion Easy to see high contrast numbers Contoured number keys with soft-touch material Backlit keypad Large font and high contrast Caller ID screen 10 speed dial memory buttons 100 name/number phonebook with 10 memory buttons 20 last number redial memory Belt clip Hear-It-Ring Clarity ringer has 10 loud and clear melodies plus 6 levels of volume Expandable up to 5 handsets (CL-D704HS) Large keypad and Caller ID display light up as a super bright visual ringer Direct connection to assistive listening devices or headset with 2.5mm jack Rohs and TIA-1083 compliant Additional Information Warranty One year limited warranty Brand Clarity Product Type Telephone Telephone Style Cordless Amplification 40dB Frequency DECT 6.0 Caller ID Screen Yes Caller ID Talking No Telephone Answering Machine No Telephone Big Buttons Yes Jack 2.5mm Telephone Speakerphone No Visual Ringer Yes Battery Backup No Vibrating Alert No Returns: Returns requests are accepted within 30 days of the date of purchase through Returns. Returned item(s) must be the item(s) purchased and must be returned complete in new resalable condition with nothing missing.