Panasonic KX-TG6700B Two Line 5.8 GHz Expandable Cordless Phone System With Answering Mac.

5.8GHz 2-Line Expandable Cordless w/ Answering System
Panasonic 5.8GHz 2-line expandable telephone system with digital answering machine
Expandable up to 8 handsets total
Only one phone jack needed for entire system
Caller ID, call waiting caller ID
50# Phonebook and dialer (on each handset)
50# Caller ID history
Phonebook sharing between handsets
4-Line backlit LCD on handset
Voice enhancer technology
Light up antenna with ringer/message alert (top of antenna flashes quickly for a ring, slowly to indicate a new message)
Frequency hopping spread spectrum technology
Wireless network friendly (will not interfere with computer networks using 2.4GHz technology
Intercom (between two handsets, or between handset and base)
Dual keypads
Digital duplex speakerphone on base
Handset speakerphone
Chain dial
Clarity booster
Voice paging
Hold/flash/redial/mute
Line 1 and line 2 soft keys on handset
Volume control on base and handset
Room monitor
Selectable ring tones (4 tones, 4 melodies) for each unit and each line
2.5mm Headset jack
Belt clip not included
Up to 4-way conference capability
Lighted handset keypad
60 Minutes of total record time
Flash memory message backup
1-Line LCD message counter on base
Voice menu 
Time/date stamp
Memo recording
Handset stands up in base
Wall mountable
Box dimensions: 9.5"L x 6"W x 4.75"H
Black