Audio quality o Excellent audio quality o Hands-free mode o Ringtone melody via hands-free speaker o Ring volume can be set in 4 levels + crescendo o Handset volume can be set in 8 levels o Speaker volume can be set in 8 levels o Compatible with hearing aids Phonebook and functions o Phonebook for up to 99 names and numbers o 4 programmable one-touch keys (A - D) for important phone numbers o Call preparation (number entry before actual dialing procedure) with correction option or Programmable shortcut keys (1 - 9) o Redial last 99 numbers (redial list consists of incoming and outgoing call numbers) o Dial procedure: multi-frequency dialing (DTMF) o Flash key (flash times programmable) Display o Large 78 x 46 mm display (W x H) o Adjustable contrast (3 levels)