- Built-In Answering Machine - Call Blocking Technology - Call Waiting & Caller ID - Bright Backlit Display - Cordless everyday calling The Motorola CD4 series is perfect for everyday calling. Easy to use, it comes with a host of features including a digital answering machine with up to 12 minutes recording time, a 10 number nuisance call blacklist and a dedicated key for direct access to the Call Block menu. conversations, easy A bright back-lit display and illuminated keypad, giving better visibility in low light environments, and hands-free speakerphone to free up your hands when needed, means the Motorola CD4 series delivers on all your home calling needs. Features - Bright Backlit Display - Call Blocking Technology - Up to 12 Minutes Digital Recording Time - Caller ID / Call Waiting - 50 Name & Number Phone Book - Hands-Free Speaker Phone - Microphone Mute - Laser-Etched Backlit Keypad