Pre-owned. Unit Tested and Works Good AT&T Model # 436 Caller ID Display Log Manager Works with a Land Line Telephone Call Waiting Caller ID display for one land-line LCD display has Three lines New call light Call list scroll with up and down buttons Options, Display/Dial, Remove, Call waiting buttons Phone jacks for land-line phone, and jack phone line Power transformer No instructions, but may be available for download on-line 50 entry memory Includes the Caller ID Unit, power adapter, and telephone cable **Some discoloration/fading on the cable cords and the Unit from shelf wear and daily use Qty: 1