ClearSounds Ultraclear amplifying speakerphone-50dB Adjustable handset amplification-Ultraclear sound-clarifying technology-Speakerphone in base-Hearing aid compatible-Free tech support for life of the product-Eco friendly-95dB Adjustable ringer-Bright visual ringer-6 Programmable memory keys-Outgoing speech amplification (12dB)-Caller ID, call waiting caller ID-99# Caller ID memory-99# Phonebook-Large backlit angle-adjustable LCD display-Display dial-New call indicator-Missed call indicator-Voicemail waiting indicator- Speakerphone volume control-Full range tone control-Amplification override reset-4 Ring tones-5 One-touch speed dials and 1 large one-touch emergency dial button-Backlit keypad-16 LCD display languages-Hi/lo/off ringer volume control-2 Amplified jacks (2.5mm hands-free and 3.5mm audio)-Jack for optional vibrating pad-One-touch voice mail button-Last number redial-Touch-tone/pulse dialing-Wall mountable-1 Year manufacturers warranty-Black- CLSCSC600