Expandable Handset For D702, D712 & D722 Amplified Cordless Phones. Patented Clarity Power(Tm) Technology. Clearly Amplifies Incoming Sounds Up To 30Db. Dect 6.0 Interference-Free Technology. Adjustable Tone Control. Loud & Clear Handset Speakerphone. Easy-To-Read Caller Id Display. Large Backlit Keypad Is Largest Of Any Cordless Phone. Backlit Keypad & Caller Id Display Act As Visual Ringers. 10 Loud-&-Clear Ringtones With 6 Levels Of Volume. Includes Belt Clip & 2.5Mm Headset Jack