The product on this page comes with a 13 months **from the date of purchase regardless of brand new or used products. Only the parent unit without the intercom All instructions are included except for the extension console and extension phone chargers. Since it is only the parent unit without a child console, the phone book function (transfers from the extension unit) cannot be used. The following registration functions can be used on the parent unit. It can be used immediately after registering the other part you frequently used; One-touch dial function allows you to register 3 buttons on 1, 2, and 3. Includes a "annoying prevention" function that sends a warning message to your opponent before the call ring ring ring sounds, and displays absence call history (date and time only); Can register up to 300 phone numbers; Approx. 4.7-inch large screen LCD, and the fax received on the screen with "print after view", which is equipped with convenient features. / Decision: Multi-button Place on top of function key Improved panel maneuverability.