The Vtech CS6419-2 is a handheld telephone that is ideal for extending a single phone line to multiple rooms of a home. This cordless phone system features one main base, an expansion base station, and two separate handsets that feature caller ID/call waiting displays and speakerphone capabilities. The caller ID/call waiting display measures 1.2 x 1.1-inches and can hold up to 50 names and numbers at a single time. The Vtech CS6419-2 takes one phone jack and turns it into multiple usable phone lines. Each Vtech cordless phone handset is programmed with DECT 6.0 Digital technology for maximum call clarity. In addition to call clarity, this technology ensures other wireless electronic devices do not interfere with incoming or outgoing calls on the Vtech CS6419-2. This cordless phone system uses digital security technology to encrypt and scramble phone calls, which prevents outsiders from eavesdropping or intercepting calls. Other features on this Vtech cordless phone include call transferring between handsets, conference calling, and automated text indicators of incoming calls and voice messages.