The BellSouth Caller ID with Call Waiting Model CI-44 is a brand new sealed device designed to display caller ID information and alert you of incoming calls while you are on the phone. With 4 lines of service and a sleek white color, this Caller ID display box from the year 2000 features caller ID memory and a 3.5mm jack connector for easy setup with your home telephone. The BellSouth CI-44 is a reliable and essential accessory for any home phone setup, allowing you to seamlessly manage your calls and stay informed about who's calling.