- Minimizes background noises- Eliminates feedback and distortion- Managing soft/loud sounds to produce clarity- Amplifying incoming sound up to 30 decibels or 6 times louder than a standard home phone- Offers 4 tone settings to customize your listening experience- Utilizes DECT 6.0 technology for clear, interference-free communication- Easy to see high contrast numbers- Contoured keys with soft-touch material for comfort- Backlit keypad that is easy to see at night- Large font and high contrast caller ID screen- Expandable up to 5 handsets (model # D702HS)