DECT 6.0 technology; Cellphone At Home(R) enables making calls with or without a landline connection; Pairs with up to 2 Bluetooth(R) phones, headsets or accessories; Patented ClarityPower(TM) technology clearly amplifies incoming sounds up to 40dB; Downloads up to 1,000 contacts from cellular phone via Bluetooth(R); Adjustable tone control; Digital answering machine; Loud & clear handset speakerphone; Easy-to-read Caller ID display that flashes as a visual ringer; 10 loud & 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; 1-year warranty;