High Volume 40 dB Large Big Button Cordless Telephones For Who May Have Age-Related Ear Problems Good presents for Birthday, Christmas, Anniversary, Mother's Day, and Father's Day This product is recommended for seniors who Have Age-Related Eye(s) Or And Ear Problems but not recommended for who has severe vision impair or very low vision Cellphone at Home allows you to make calls with or without a landline connection  Pair up to 2 Bluetooth phones, headsets, or accessories  Patented Clarity Power technology clearly amplifies incoming sounds up to 40dB  Download up to 1,000 contacts from your cell phone via Bluetooth DECT 6.0 interference-free technology  Adjustable tone control  Digital answering machine  Loud and clear handset speakerphone  Easy-to-read caller ID display that flashes as a visual ringer  10 loud-and-clear ringtones that can be programmed for each line or paired device  Large, easy-to-use keypad  Expandable up to 5 total handsets  Hearing aid compatible