The Panasonic KX-TGD513B features three handsets, expandable to six handsets, with white backlit LCD screens and Intelligent Eco Mode, which lowers power consumption and extends talk time. The KX-TGD513B also features ringer IDs and the capability to permanently block up to 150 numbers. Expandable Cordless Phone with 3 Handsets This practical, sleek black home system with one handset includes one-touch Call Block to stop up to 150 bothersome caller numbers, improved high-contrast displays and keypads, a 100 number phonebook, nine speed dial settings and handset-to-handset intercom. Available with one, two or three cordless handsets, this system is expandable up to six handsets for calling convenience throughout the house. Block Unwanted Callers With a dedicated Call Block button on each handset, it's easy to block telemarketers, robocalls and other bothersome caller numbers. One button registers up to 150 caller numbers — even while the phone is ringing or while you're talking or listening. High-Contrast Displays and Keypads In one quick glance, large, 1.6-inch, high-contrast white backlit LCD handset screens clearly show calling functions in any light. Soft-touch amber backlit keypads and smartly positioned phone function buttons provide enhanced readability. Ringer IDs Select a ringer from the system's library to link individual ringtones to your pre-programmed phone book entries. Your assigned pre-programmed ringtones will sound when corresponding Caller ID numbers are received from incoming calls. Extend Talk Time With the system's Intelligent Eco Mode, handset power consumption lowers automatically on the handset nearest the base unit. The result is extended talk time and less power consumed by the handset and base unit. Additional Calling Conveniences With the Panasonic KX-TGD513B system you can program and store up to 100 numbers in your phonebook, enjoy the time-saving convenience of nine speed dial settings and handset-to-handset intercom. Handsets provide talk time up to 10 hours and up to 5 days of standby time. Accessories The KX-TGD513B base unit is wall-mountable and comes with matching wall bracket and screws. Two rechargeable AAA-size Ni-MH batteries are also included.