Panasonic KX-TG6500B 5.8 GHz DSS Expandable 2-Line Cordless Phone (Black) 5.8 GHz digital spread spectrum signal Expandable to 4 handsets, 1 included, with integrated speakerphone 60-minute integrated digital answering system; 4 ring tones Caller ID/wall waiting with 50-call memory Supports 2 lines; flash, redial, hold functions