The handset has big black buttons with white numbers. The orange backlit LCD display has an adjustable contrast. The unit has 5 levels of ringing volume and an adjustable receiver volume of up to 22dB. Other features include; talking time display, redial, mute function, keypad lock capability, 5 ringtones and 5 melodies. The unit is GAP compatible. Please note: The base of this product does not ring and sighted assistance may be required for the setup of the phonebook.