The VTech CS5119-2 DECT 6.0 Expandable Cordless Phone with Caller ID and Handset Speakerphone is built to give you all the features a busy household needs. A full-duplex handset speakerphone allows both ends to speak and be heard at the same time for conversations that are more true to life. Caller ID entries display on a large backlit LCD screen so you can see who’s on the line even in the dark. With DECT 6.0 transmission the VTech CS5119-2 DECT 6.0 Expandable Cordless Phone with Caller ID and Handset Speakerphone gives you private interference-free sound from any room in your home. Add up to three accessory handsets in minutes with just one phone jack.