Amplifies incoming sound up to 40 decibels- Four tone settings to customize your listening experience- Amplified digital answering machine making it easier to listen to messages- Large high contrast CID display- Extra loud and clear speakerphone for hands-free conversations- Large keypad with high contrast numbers- Five speed dial buttons to store important numbers- Ten loud ringer melodies with six levels of volume- CID display lights up as super bright visual ringer- Expandable up to four cordles handsets model # D703HS