4-Line Speakerphone w/ Caller ID BLACK-Panasonic 4-line corded speakerphone with digital answering system-Compatible with KX-TS4100B and KX-TS4200B-Same as the KX-TS4200B, adds digital answering system-Expandable up to 16 stations-Caller ID, call waiting caller ID-200# Phonebook and dialer-200# Caller ID memory and dialer-3-Way conferencing-16 x 2 keys one touch operation-4-Line backlit LCD-Dual language (English/Spanish)-2.5mm Headset jack with control and indicator button-Speakerphone with in-use indicator-Handset/headset receiver volume control (5 level)-Speakerphone volume control (8 level)-Ringer volume control (4 level)-4 Selectable ring tones-Ringer on/off control-Auto line selection-Prime line preference-Line group selection-Last 6 numbers redial capability-Intercom-Voice paging-Call transfer-Do not disturb-Real time clock AM/PM format-Battery backup system (9V battery sold separately)-Digital answering system-60 minutes of record time-Automated attendant-Phone company voicemail compatible-Remote operation-Chain dial-Wall mountable-2 Desktop angle choices for easier viewing-AC powered-1 Year manufacturers warranty-BlackKXTS4300B