Caller ID & handset speakerphone; Expandable up to 5 total handsets (D703HS); Large backlit keypad is the largest of any cordless phone; Loud & clear speakerphone; 4 tone settings to customize the incoming sound; 10 loud-&-clear ringtones with 6 levels of volume; Includes belt clip & 2.5mm headset jack; Hearing aid compatible; 1-year warranty;