Clarity BT914C4 59914.041 Bt914 + 4 Bt914-hs - - 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