Enjoy amplified calls without a landline. The BT914 pairs with your cell phone or other mobile device to make calls. Cellphone At Home® allows you to make calls with or without a landline connection. You can pair up to two (2) Bluetooth® phones, headsets or accessories. Additional features include: 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; ten (10) loud-and-clear ringtones that can be programmed for each line or paired device; large, easy-to-use keypad; expandable up to five (5) total handsets; and hearing aid compatible.