FeaturesEasy to read big buttonsLED indication for incoming calls10 two touch memoryRinger volume high/lowHands free speaker with volume controlThe easy to use Aidapt Big Button Telephone is ideal for those with impaired vision or limited dexterity, with easy to read numbers and symbols in large bold text. Featuring an LED flash indicator for incoming calls to aid users with a hearing impairment. The big button telephone is easily installed by simply connecting the telephone wire to your existing wall socket. Additional features include; 10 two-touch memory, Hi/Low ringer volume, Hi/Low handset volume control, hands-free speaker with volume control, the last number redial and wall-mount option.