RCA Unison 1-Handset 4-Line Black Corded Expandable Telephone System

4-line accessory deskset. Compatible with RCA Unison base station, must have base station for phone to work. Features DECT 6.0 wireless technology for clear, secure calls. Full duplex speakerphone, large and easy to read display, 9-station status indicators, 200-name & number directory, 20-number speed dial, Do Not Disturb function, caller ID, one-touch voicemail access key, incoming/outgoing call logs, custom ring tones. 2-year warranty.