This document is the operating instructions for the Panasonic KX-TG5210 series 5.8 GHz expandable cordless phone system. The phone has pulse or tone dialing capability and is compatible with Caller ID service. To display the caller's name and phone number, the user must subscribe to Caller ID service. The battery needs to be charged for 6 hours before initial use. The phone also features Call Waiting Caller ID, which requires a subscription to both Caller ID and Call Waiting with Caller ID Services. The document also provides information on the included accessories for the phone.