PANASONIC TWIN BIG BUTTON CORDLESS PHONEBig Button with Large Characters-Easy-to-see and easy-to-push big illuminated keypad with large characters.Three Dedicated Memory Dial Keys-Enable you to dial with a simple operation.Quick Volume Control & Hearing Aid CompatibilityDedicated volume keys and Amplify key on the side of handset for easy control during talking. Simply push the Amplify key to boost the volume to about 2 times the normal level.(6dB)Large, 1.8-inch Backlit DisplaySimple key layoutHAC (Hearing Aid Compatibility) SupportHandset with Dimples for Slip ResistanceEco Mode / Zero EmitCall BlockHands-Free Speakerphone on Handset