Cordless phone with amplification up to 50dB and a frequency/tone control that acts as a sound equalizer. Extra large, 3-line LCD display. Blue keypad backlight. Amplified ringer to 95dB in both base and handset with a flashing strobe signaler and vibrating option in the handset. There is a jack for optional bedshaker in base for nighttime alerting. Auto-talk when handset is lifted off base. 2.5mm amplified headset jack in handset. Up to 3 additional amplified extension handsets can be added to this phone, using only one phone jack. (No handset to handset communication.) Hearing aid compatible. One year warranty.