Panasonic KX-TH1211 DECT expandable cordless phone system with Bluetooth® link for cell phones Bluetooth® link for taking cell phone calls through your home phone * compatible with landline (not required) * multi-handset operation (add up to 5 optional handsets for a total of 6) * 1.9 GHz frequency range * 1.4″ white, backlit LCD display on handset *

Amazon.com: Panasonic KX-TG2730S 2.4 GHz DSS Expandable Cordless Phone …
This item: Panasonic KX-TG2730S 2.4 GHz DSS Expandable Cordless Phone with Answering System ; Panasonic 3.6V NiMH Rechargeable Cordless Telephone Battery (HHR-P402A)

Panasonic PP511A Cordless Phone Replacement Battery, P-P511 / HHR-P402 Type 24 Customer Review: Beware of this battery
I purchased this battery as a replacement for the original battery in my cordless telephone. Although I fully charged the battery upon arrival, it will not hold a charge for more than 24 hours. I would not purchase this battery again.

Panasonic Refurb KXTG6700B 5.8 GHZ 2-Line Cordless Phone, Expandable to 2×8,Digital Answering Device, Caller ID, Black Panasonic KX-TG6700B 5.8 GHz 2-Line Cordless Expandable w/ Answering SystemThe Panasonic KX-TG6700B 2-Line 5.8 GHz Expandable Cordless Phone System is a combination expandable cordless phone and answering machine. Its 2-line expandable phone system gives you all the call-managing options you need for your growing household or small business.* Panasonic 5.8GHz 2-line expandable telephone system with digital answering machine * Expandable up to 8 handsets total * Caller ID, call waiting caller ID capable * 50 Number Phonebook and dialer * 50 Number Caller ID history * Handset speakerphone * Hold/flash/redial/mute * Selectable ring tones (4 tones, 4 melodies) for each unit and each line * 2.5mm Headset jack