Full Duplex Speakerphone -Enjoy a speakerphone that can keep up with your calls. Increase participation by allowing both ends to speak and be heard at the same time, for conversations that are more true to life. Backlit keypad and display - The entire keypad illuminates along with the LCD screen, allowing for easier viewing in dim light. Caller ID/Call Waiting - Stores 30 calls - Know who's calling with caller ID/call wiating. Handset dsiplays the name, number, time and date of incoming calls. Quiet Mode - Silence the ringer on the handset and base unit momentarily or for an extended period of time. ECO manages power consumption so the system uses less energy and you get the best battery life.