Clarity amplified handset- 50+dB sound amplification- Large caller ID screen with talking caller ID- Works with XLC3.4 DECT 6.0 amplified cordless phone- Digital Clarity Power amplifies incoming sound up to 50+ decibels- Four tone settings for a customized listening experience- Amplifies outgoing speech up to 15 decibels so others can hear you better- Large font and high contrast caller ID screen- Illuminated talking dial pad with large buttons that speak the number that is dialed- Belt clip for hands-free mobility- Extra loud ringer (95dB) with adjustable tones- Super bright visual ringer with voicemail indicator- Hearing aid compatible and TIA-1083 compliant- Direct connection to assistive listening devices or headset (2.5mm or 3.5mm)- Battery backup lets you make calls when the power is out- Expand up to 4 handsets - XLC3.1HS