The Panasonic KX-TG2521 is a cordless telephone system that features a 1.4-inch monochrome display and an illuminated keypad. It has a phonebook capacity of 50 entries and a caller ID memory of 50 names and numbers. The phone also includes an answering machine with a recording time of 20 minutes. The phone’s battery life is said to last up to 17 hours of talk time and 180 hours on standby. The system is expandable up to 6 devices and also includes a range extender for optimal coverage.