Enjoy the clarity and reliability of a landline phone, with easytouse features that make your work and home life easier. Panasonic Cordless Phone KXTGD664M is a 4handset home phone system expandable up to 6 handsets, with an integrated Digital Answering machine to make sure you never miss a message. Make and receive clear cell phone calls even in cell dead zones with Link2Cell. And no need to worry about draining the battery an audible Low Battery Alert lets you know when the battery needs charging, and more. Noise Reduction Technology helps make every call as clear as possible by reducing the surrounding noise coming from the other party s telephone. A robust Call Block system allows 1step blocking up to 1000 nuisance callers with the touch of a button, while a Phone book of up to 3,000 numbers makes sure all your important contacts easily accessible. A range of handsfree phone functions lets you enjoy mobility and flexibilityfull duplex speakerphone lets you use your handset handsfree; handset can be used as a baby monitor even while away from home. Bilingual Caller ID lets you customize your caller ID to display in English or Spanish and get caller announcements in that same language so you can hear who is calling, even when you re across the room note: caller ID requires additional service through your local phone company