Panasonic KX-TGF383M DECT 3-Handset Landline Telephone Easily pair up to two smartphones to make and receive cell calls with Link2Cell Bluetooth system Get talking ID alerts from Link2Cell handsets when texts are received. Frequency 1.9 GHz Block up to 250 numbers with one-touch Call Block on base unit and handsets Includes three one-touch dial buttons, baby monitor and battery power backup.See and hear email, social media and other cellphone alerts via Android App with the extended power and signal range of advanced Class 1 Bluetooth, calls can made and received from both cellphone lines simultaneously, anywhere in and around the house.