REQUIRES A BASE UNIT TO OPERATE DECT 6.0 Digital technology for long range coverage and clarity Aaccessory handset speakerphone with intercom between handsets Must be used with one of the 8000 series base units such as Orgill SKU 426.1525 Call transfer using intercom conference between an outside line and handset 50 name/number phonebook directory and 50 name/number caller ID history, lighted keypad and display, selectable ringer tones, ringer and handset volume control Features include any key answer, on-hook dialing, auto off, mute, last 5 number redial, caller ID/call waiting capability, which requires a subscription to caller ID services available through the local telephone company New call - missed call indicator and display di Color=Black/Silver