FeaturesExtra loud (50dB) phone with tone control (4 settings), boost button and volume control wheel to give you a customized listening experienceAmplifies outgoing speech up to 15dB for others to hear you betterLoud and clear speaker phone for hands-free conversations in the handset and baseLive slow talk to slow down real-time conversations and to slow down messages on answering machinePair to your wireless enabled mobile phones (2) - works with or without a landlineHigh contrast Caller ID screen with large font in either English, Spanish or French languagesTalking Caller ID and talking illuminated dial pad in either English or FrenchExtra loud, ?ashing ringer with adjustable tones and voicemail indicatorCall blocker/Call screening to block and screen unwanted phone callsHearing aid compatible and TIA-1083 compliant for interference free conversationsDirect connection to 2.5mm or 3.5mm headsets/neckloops via outputs on both the base unit & the handsetDual Power Battery Backup lets you make calls when the power is out (batteries included)Expandable with up to four handsets (XLC8HS or XLCgo - not included)One (1) year warranty